Issue #146415 • 21 December 2025

Sleeping Masks: Enhance Your Sleep Quality hero background
sleep solutions

Discover Your Ideal Sleeping Mask

Block light and enhance your sleep quality effortlessly

Content last updated 21 December 2025

Introduction

In today's fast-paced world, a good night's sleep is more crucial than ever. Sleeping masks offer an effective solution for those struggling to escape light disturbances, ensuring a restful slumber. With a myriad of options available, selecting the perfect sleeping mask can significantly enhance your sleep quality. Whether you're a frequent traveller, a shift worker, or simply someone who values their sleep environment, investing in a quality sleeping mask can lead to improved focus, mood, and overall well-being. With 15 unique products on the market, it's essential to understand what features matter most and why this category resonates with consumers seeking better sleep solutions.

I've examined countless options on Amazon to bring you this carefully selected lineup of exceptional products.

At a Glance

MyHalos 3D Sleep Mask
⭐ Top Rated Prime

4.7 out of 5 stars (15,796 reviews)
MyHalos 3D Sleep Mask Blackout Eye Mask for Comfort
The MyHalos 3D Sleep Mask is a top choice for those seeking a comfortable and effective way to block out light. With its flexible nose design, it contours perfectly to your face, allowing for a blissful sleep experience without any pressure on the eyes. Users love its soft memory foam material that promotes airflow, making it suitable for long journeys or home use. The included storage pouch adds to its convenience, making it a must-have for frequent flyers or night-shift workers.

Design and Comfort

The MyHalos 3D Sleep Mask stands out with its ergonomic design that prioritises comfort. The flexible nose bridge ensures a snug fit while blocking out light effectively. Made from premium memory foam, it's soft against the skin, providing a soothing touch that helps promote relaxation. Additionally, its breathable fabric allows air circulation around the eyes, preventing overheating during sleep. This mask is particularly beneficial for those with lash extensions, as it alleviates pressure on the eyes, reducing the risk of irritation or damage.

Functionality and Use Cases

This sleep mask is ideal for various scenarios, including travel, home use, or even office naps. Its ability to block out light makes it perfect for night-shift workers or anyone needing to sleep during the day. The compact storage pouch included allows you to keep it hygienic and portable, making it easy to carry in your handbag or backpack. Users find it extremely beneficial for enhancing sleep quality, particularly in brightly lit environments. Overall, the MyHalos mask is a reliable companion for anyone looking to improve their sleep experience.

What We Love
  • Flexible nose design for a secure fit
  • Soft and breathable memory foam
  • Ideal for lash extensions
  • Includes storage pouch for travel
  • Lightweight and portable
  • Effective light blockage
The Drawbacks
  • May not fit all head sizes perfectly
  • Memory foam may wear over time
  • Limited colour options
  • Not machine washable

LitBear Sleep Mask
🚀 Best Premium ⭐ Top Rated Prime

4.7 out of 5 stars (10,901 reviews)
LitBear 3D Contoured Cup Sleep Mask for Side Sleepers
Designed specifically for side sleepers, the LitBear Sleep Mask offers an innovative solution to minimize pressure on the temples while providing complete darkness. Its unique contoured design allows ample space for blinking without compromising comfort. Users appreciate the adjustable strap that ensures a snug fit, making it an excellent choice for various sleeping positions. The lightweight, breathable fabric adds to its appeal, making it perfect for travel or daily use.

Innovative Design

The LitBear Sleep Mask features a revolutionary design tailored for side sleepers. Its 15° tilt angle on the ultra-thin sides dramatically reduces pressure on your temples, allowing for a more comfortable sleep experience. The deep 12 mm 3D contoured eye sockets provide a larger space for blinking, preventing any discomfort or makeup smudging. This thoughtful approach to design makes it a standout choice for individuals who often shift positions during sleep.

Comfort and Material Quality

Constructed from super soft cooling fabric and low-rebound memory foam, the LitBear mask feels luxurious against the skin. The breathable material ensures comfort, particularly during travel or warmer nights. The adjustable elastic strap fits head circumferences from 20.5 to 26.5 inches, catering to a variety of users. Hand wash instructions ensure longevity, while the lightweight nature of the mask makes it easy to carry, enhancing its usability for on-the-go lifestyles.

What We Love
  • Perfect for side sleepers
  • Innovative pressure-reducing design
  • Adjustable strap for a secure fit
  • Soft and breathable materials
  • Lightweight and easy to carry
  • Deep eye sockets for comfort
The Drawbacks
  • Not suitable for all nose shapes
  • May not block out all light for some users
  • Requires hand washing
  • Limited colour choices

Gritin Blackout Sleep Mask
⚡ Best Performance ⭐ Top Rated Prime

4.6 out of 5 stars (11,135 reviews)
Gritin Ergonomic 3D Blackout Sleep Mask
Gritin's Blackout Sleep Mask is designed for ultimate comfort, featuring a zero eye pressure design that enables free eye movement. Users report that this mask effectively blocks out all light, making it ideal for various sleeping environments, including travel and home. Its ergonomic shape and soft fabric ensure that it remains comfortable throughout the night, making it a great choice for those who value quality sleep.

Ergonomic Design Features

The Gritin Blackout Sleep Mask boasts a unique ergonomic design with a 3D cutout around the eye area, allowing for natural eye movement without pressure. This feature is particularly beneficial for individuals with eyelash extensions or sensitive eyes, as it eliminates the risk of irritation and discomfort. The adjustable elastic strap ensures a secure fit for most head sizes, making it versatile for different users.

Material and Comfort

Made from ultra-soft materials, this sleep mask provides a comfortable touch against the skin. The breathable fabric allows for air circulation, reducing the likelihood of overheating during sleep. Users appreciate the lightweight design, which ensures that the mask can be worn for extended periods without feeling intrusive. Whether for naps or overnight use, the Gritin mask enhances sleep quality by creating a dark, calming environment.

What We Love
  • Zero eye pressure design
  • Effective light blockage
  • Soft and breathable materials
  • Adjustable strap for various head sizes
  • Lightweight and portable
  • Ideal for travel and home use
The Drawbacks
  • Might slip off during sleep
  • Not suitable for larger head sizes
  • Limited colour options
  • May require frequent washing

Mavogel Cotton Sleep Mask
🏆 Best Overall 🎯 Editor's Choice ⭐ Top Rated Prime

4.4 out of 5 stars (89,360 reviews)
Mavogel Adjustable Cotton Sleep Eye Mask
The Mavogel Cotton Sleep Eye Mask is a budget-friendly option that doesn't compromise on quality. Designed with an adjustable nose bridge, it effectively blocks out light, ensuring a restful sleep experience. Users appreciate the soft cotton fabric, which is gentle on the skin, making it suitable for extended use. This mask is particularly beneficial for shift workers and travellers looking for a reliable sleep solution.

Adjustable and Comfortable Design

One of the standout features of the Mavogel sleep mask is its adjustable nose bridge, allowing for a customised fit for various head sizes. This adaptability means that it effectively blocks out light from the nose area, enhancing the overall sleeping experience. The design also incorporates soft cotton triangle wings that prevent movement during sleep, further ensuring comfort and a peaceful night.

Material Quality and Usability

Crafted from five layers of breathable fabric, including cotton and elastic sponge, the Mavogel mask provides a soft touch against the skin. Its handmade construction ensures high-quality seams that reduce rubbing and irritation. Users can hand wash the mask easily, and its lightweight design makes it perfect for travel, providing a comfortable sleeping solution wherever you go.

What We Love
  • Adjustable nose bridge for a custom fit
  • Effective light blocking
  • Soft cotton material
  • Handmade with quality seams
  • Lightweight and portable
  • Ideal for shift workers
The Drawbacks
  • May not fit all head sizes perfectly
  • Requires hand washing
  • Limited colour options
  • Cotton may not be as breathable as silk

slip Silk Sleep Mask
⭐ Top Rated 👑 Iconic Prime

4.5 out of 5 stars (953 reviews)
slip Pure Silk Sleep Mask 100% Mulberry Silk
The slip Pure Silk Sleep Mask in navy offers a luxurious sleep experience, crafted from 100% mulberry silk. This mask not only blocks out light effectively but also protects skin and hair from damage. Users rave about its softness and comfort, making it a perfect choice for those who value high-quality sleep products. Its elegant design also makes it a great gift option for loved ones.

Luxurious Material and Design

The slip Pure Silk Sleep Mask is made from 22 momme mulberry silk, known for its luxurious feel and durability. This high-quality silk helps reduce friction against the skin, preventing sleep creases and protecting hair from damage. The elegant navy colour adds a touch of sophistication, making it a stylish accessory for anyone's sleep routine.

Functionality and User Experience

Designed to block out all light, this sleep mask ensures a restful night's sleep, whether at home or while travelling. The adjustable elastic band provides a snug fit without applying pressure on the eyes, enhancing comfort during sleep. Users appreciate the thoughtful details, such as its packaging, which makes it an excellent gift choice for those who prioritise beauty sleep.

What We Love
  • Luxurious 100% mulberry silk
  • Effective light blockage
  • Gentle on skin and hair
  • Adjustable for comfort
  • Elegant gift packaging
  • Durable and long-lasting
The Drawbacks
  • High price point
  • Limited colour options
  • May not fit all head sizes
  • Silk requires special care

LitBear Silk Sleep Mask
⭐ Top Rated Prime

4.4 out of 5 stars (1,272 reviews)
LitBear Silk Sleep Mask 100% Mulberry Silk
The LitBear Silk Sleep Mask is an indulgent choice for those seeking comfort and luxury. Made from 100% mulberry silk, it provides a gentle touch against the skin while effectively blocking out light. Users appreciate its adjustable band that accommodates all head sizes, making it suitable for various sleep positions. This mask is a fantastic option for travel, ensuring restful sleep wherever you go.

Luxury and Comfort

Crafted from premium 22 momme mulberry silk, the LitBear Silk Sleep Mask offers a luxurious experience that enhances sleep quality. The silk's natural properties help maintain moisture levels in the skin, providing an anti-ageing benefit while reducing friction. This thoughtful design caters to users who want both comfort and effectiveness in their sleep products.

Practical Design Features

The mask is designed to provide total darkness, making it ideal for use in various environments, such as during travel or at home. Its cushioned band ensures a comfortable fit without slipping off during the night, catering to all head sizes. The elegant presentation makes it a perfect gift, adding a touch of sophistication to anyone's sleep routine.

What We Love
  • Made from luxurious 100% mulberry silk
  • Effective light blocking
  • Adjustable for all head sizes
  • Cushioned band for comfort
  • Ideal for travel and home use
  • Elegant gift presentation
The Drawbacks
  • Higher price point
  • May require special care when washing
  • Not suitable for all nose shapes
  • Limited colour options

BeeVines Silk Sleep Mask
💰 Best Value ⭐ Top Rated

4.7 out of 5 stars (29,629 reviews)
BeeVines 2 Pack 100% Pure Silk Sleep Masks
The BeeVines 2 Pack Silk Sleep Masks are an excellent value for those looking to enhance their sleep quality without breaking the bank. Made from 100% pure silk, these masks effectively block light while being gentle on the skin. Users appreciate the adjustable strap that ensures a comfortable fit, making them suitable for various sleeping positions. This affordable option is perfect for gifting or personal use.

Value for Money

Offering two masks for the price of one, the BeeVines Silk Sleep Masks provide outstanding value. Made from high-quality mulberry silk, they deliver comfort and effective light blocking at a budget-friendly price. The silk material is hypoallergenic, making it ideal for those with sensitive skin. Users love the flexibility of having an extra mask for travel or sharing with a partner.

Design and Comfort

The adjustable strap allows for a snug fit, accommodating various head sizes while ensuring no light leakage. The smooth silk texture feels luxurious against the skin, contributing to a restful sleeping environment. Lightweight and portable, these masks are perfect for travel, offering users the ability to sleep comfortably anywhere.

What We Love
  • Great value with two masks included
  • Made from 100% pure silk
  • Adjustable strap for comfort
  • Hypoallergenic and skin-friendly
  • Lightweight and portable
  • Ideal for travel or gifting
The Drawbacks
  • Silk may require special care
  • Limited colour options
  • Not suitable for all head sizes
  • May slip off during sleep

slip Black Silk Sleep Mask
👑 Iconic Prime

4.3 out of 5 stars (533 reviews)
slip Pure Silk Sleep Mask Black 100% Mulberry Silk
The slip Pure Silk Sleep Mask in black is a luxurious sleep accessory, crafted from 100% mulberry silk. Known for its soft feel, this mask not only blocks light effectively but also protects skin and hair. Users appreciate its elegance and comfort, making it a perfect addition to any sleep routine. The adjustable band ensures it stays in place while you sleep, adding to its overall functionality.

Luxurious Material

Made from high-quality 22 momme mulberry silk, the slip Black Silk Sleep Mask offers a gentle touch against the skin. This luxurious material helps reduce friction, preventing sleep creases and protecting hair from damage. The elegant black design adds a sophisticated touch to your nighttime routine, appealing to those who appreciate style.

Functionality and User Experience

Designed to provide complete darkness, this mask ensures a restful sleep experience, making it suitable for various settings, whether at home or while travelling. The adjustable elastic band accommodates different head sizes without causing pressure on the eyes, enhancing comfort during sleep. Users value the thoughtful details, including its presentation, making it a great gift for friends or family.

What We Love
  • Luxurious 100% mulberry silk
  • Effective light blockage
  • Gentle on skin and hair
  • Adjustable for comfort
  • Elegant gift packaging
  • Durable and long-lasting
The Drawbacks
  • High price point
  • Limited colour options
  • May not fit all head sizes
  • Silk requires special care

Greneo 3D Sleep Mask

4.7 out of 5 stars (222 reviews)
Greneo 3D Sleep Mask Zero-Gravity Eye Mask
The Greneo 3D Sleep Mask offers an innovative design that provides zero eyelash pressure and complete light blockage. Users appreciate its ergonomic shape and the cooling breathable fabric, making it comfortable for extended wear. This mask is particularly beneficial for travel or daytime naps, allowing users to rest without distractions or discomfort.

Innovative Ergonomic Design

The Greneo 3D Sleep Mask features a unique 20mm 3D concave structure, allowing for ample space around the eyes. This design prevents pressure on the eyelashes and makeup, ensuring a comfortable experience for those who frequently wear cosmetics. The lightweight construction adds to its usability, making it a preferred choice for travellers and those who need to catch up on sleep during the day.

Comfort and Breathability

Crafted from high-quality memory foam and cooling fabric, this sleep mask ensures a gentle fit without discomfort. The ventilated structure prevents moisture buildup, keeping your face cool and comfortable throughout the night. The adjustable strap fits a wide range of head circumferences, making it suitable for various users. With its washable feature, maintaining hygiene is easy, enhancing the overall user experience.

What We Love
  • Zero eyelash pressure design
  • Effective light blockage
  • Cooling breathable fabric
  • Adjustable strap for comfort
  • Lightweight and portable
  • Easy to wash
The Drawbacks
  • May not fit all head sizes perfectly
  • Limited colour options
  • Not suitable for all nose shapes
  • Memory foam may wear over time

slip Contour Sleep Mask
👑 Iconic Prime

4.4 out of 5 stars (244 reviews)
slip Black Contour Sleep Mask 100% Pure Mulberry Silk
The slip Black Contour Sleep Mask features a unique design that ensures a comfortable fit around the eyes without pressure. Made from 100% mulberry silk, it effectively blocks out light while being gentle on the skin. Users appreciate its luxurious feel and ergonomic design, making it a great addition to any sleep routine.

Ergonomic and Luxurious Design

This mask is specifically designed to provide a contoured fit that sits away from the eyes, allowing for free movement and preventing pressure on eyelashes. Made from high-quality 22 momme mulberry silk, it combines luxury with functionality, ensuring a restful night's sleep. The elegant design makes it a stylish accessory for anyone looking to enhance their sleep experience.

Functionality and User Experience

The slip Contour Sleep Mask is designed to block out all light, making it ideal for various sleeping environments, whether at home or while travelling. The adjustable strap allows for a comfortable fit without putting pressure on the eyes, further enhancing user satisfaction. Overall, this mask is a perfect blend of style and practicality, catering to those who value quality sleep.

What We Love
  • Unique contoured design
  • Made from luxurious silk
  • Effective light blockage
  • Adjustable for comfort
  • Gentle on skin and hair
  • Stylish and elegant
The Drawbacks
  • High price point
  • Limited colour options
  • May not fit all head sizes
  • Silk requires special care

Gritin 3D Blackout Eye Mask
⭐ Top Rated

4.7 out of 5 stars (2,779 reviews)
Gritin 3D Blackout Eye Mask Zero Pressure Design
The Gritin 3D Blackout Eye Mask is designed to provide zero pressure on the eyes while ensuring complete darkness. Users appreciate its ergonomic design and comfortable materials, making it suitable for various sleeping positions. This affordable option is perfect for those looking to enhance their sleep quality without overspending.

Zero Pressure and Ergonomic Design

The Gritin 3D Blackout Eye Mask features a unique design that allows for natural eye movement without pressure. This is particularly beneficial for individuals with sensitive eyes or those who wear makeup, as it prevents irritation. The adjustable strap ensures a secure fit for most head sizes, making it a versatile choice for different users.

Material Quality and Comfort

Made from soft, breathable materials, this sleep mask provides a comfortable touch against the skin. The lightweight design ensures that it can be worn for extended periods without discomfort. Users find it an excellent companion for travel, daytime naps, or even overnight use, enhancing their overall sleep quality.

What We Love
  • Zero pressure design
  • Effective light blockage
  • Adjustable strap for various head sizes
  • Soft and breathable materials
  • Lightweight and portable
  • Ideal for travel and home use
The Drawbacks
  • Might slip off during sleep
  • Limited colour options
  • Not suitable for larger head sizes
  • May require frequent washing

BeeVines 2 Pack Sleep Mask
⭐ Top Rated

4.6 out of 5 stars (2,683 reviews)
BeeVines 2 Pack 3D Contoured Eye Masks
The BeeVines 2 Pack Sleep Masks offer great value for those seeking comfort and light blockage. Their 3D contoured design ensures a comfortable fit while effectively blocking light. Users appreciate the adjustable strap that accommodates different head sizes, making these masks suitable for both men and women. This affordable option is perfect for travel or home use.

Value and Design

Offering two masks in one pack, the BeeVines 2 Pack Sleep Masks provide excellent value for money. The 3D contoured design ensures a snug fit, preventing light leakage while maintaining comfort. Made from breathable materials, they are suitable for various sleeping positions, ensuring users can sleep soundly without interruptions.

Adjustability and Comfort

The adjustable strap allows these masks to fit a variety of head sizes comfortably. Lightweight and portable, they are ideal for travel, making it easy to maintain a good sleep routine while on the go. Users appreciate the affordability and functionality of these masks, making them a popular choice.

What We Love
  • Great value with two masks included
  • 3D contoured design for comfort
  • Adjustable strap for all head sizes
  • Lightweight and portable
  • Ideal for travel or gifting
  • Suitable for men and women
The Drawbacks
  • Silk may require special care
  • Limited colour options
  • Not suitable for all head sizes
  • May slip off during sleep

Pylzodsi Sleep Mask

4.5 out of 5 stars (30 reviews)
Pylzodsi Soft 3D Contoured Sleep Mask
The Pylzodsi Sleep Mask is designed with side sleepers in mind, featuring a unique 15-degree tilt that reduces pressure on the temples. Users report that it provides complete darkness while being incredibly comfortable, making it an excellent choice for various sleeping positions. This affordable option is ideal for both home use and travel.

Tailored for Side Sleepers

The Pylzodsi Sleep Mask features a specially designed tilt that takes 90% of the pressure off your temples, making it ideal for side sleepers. The soft, flexible nose wing design ensures a perfect fit for different face shapes, preventing any light leakage. This thoughtful design enhances comfort and usability for a restful night's sleep.

Comfort and Material Quality

Constructed from breathable materials, the Pylzodsi mask provides a lightweight and comfortable experience. The deep eye sockets allow for ample room for blinking, ensuring that users can wear it without feeling constricted. Adjustable straps make it suitable for various head sizes, making it a versatile choice for many users.

What We Love
  • Tilted design reduces temple pressure
  • Effective light blocking
  • Soft and breathable materials
  • Adjustable strap for comfort
  • Deep eye sockets for blinking
  • Ideal for side sleepers
The Drawbacks
  • May not fit all head sizes perfectly
  • Requires hand washing
  • Limited colour options
  • May slip off during sleep

H HOME-MART Silk Sleep Mask

4.5 out of 5 stars (198 reviews)
H HOME-MART Luxurious Silk Sleep Mask
The H HOME-MART Silk Sleep Mask is a luxurious addition to your sleep routine, made from 100% mulberry silk. It effectively blocks out light while being gentle on the skin. Users appreciate its comfort and elegant design, making it a great gift option for anyone who values quality sleep.

Luxury and Comfort

Crafted from high-quality mulberry silk, the H HOME-MART sleep mask offers a soft touch and luxurious feel. This mask not only blocks out light effectively but also helps prevent sleep creases and protects hair from damage. Users find this mask to be a perfect companion for both home and travel.

Practical Design Features

The adjustable strap ensures a comfortable fit for various head sizes, making it suitable for different users. Its lightweight design and elegant packaging make it an attractive gift choice. Overall, this mask provides an excellent balance of luxury and practicality for anyone looking to enhance their sleep experience.

What We Love
  • Made from luxurious 100% mulberry silk
  • Effective light blocking
  • Gentle on skin and hair
  • Adjustable for comfort
  • Elegant gift packaging
  • Durable and long-lasting
The Drawbacks
  • High price point
  • Limited colour options
  • May not fit all head sizes
  • Silk requires special care

ETERNALLOOG 2 Pack Silk Masks

3.9 out of 5 stars (14 reviews)
ETERNALLOOG 2 Pack 100% Mulberry Silk Sleep Masks
The ETERNALLOOG 2 Pack Silk Sleep Masks offer excellent value, made from 100% mulberry silk. These masks effectively block light while being gentle on the skin, making them suitable for sensitive users. Users appreciate the adjustable strap for comfort and the lightweight design, making them ideal for both travel and home use.

Value and Design

With two masks included in one pack, the ETERNALLOOG offers fantastic value for those seeking quality sleep masks. Made from luxurious mulberry silk, these masks ensure comfort and effective light blocking. The silk material is hypoallergenic, making it a great choice for those with sensitive skin.

Adjustability and Comfort

The adjustable strap allows for a snug fit, accommodating various head sizes while ensuring no light leakage. Lightweight and portable, these masks are perfect for travel or daily use, enhancing users' sleeping experience wherever they are.

What We Love
  • Great value with two masks included
  • Made from 100% pure silk
  • Adjustable strap for comfort
  • Hypoallergenic and skin-friendly
  • Lightweight and portable
  • Ideal for travel or gifting
The Drawbacks
  • Silk may require special care
  • Limited colour options
  • Not suitable for all head sizes
  • May slip off during sleep

Frequently Asked Questions

When selecting a sleep mask, consider factors such as material, comfort, light-blocking capabilities, and fit. For example, the MyHalos 3D Sleep Mask offers a flexible design that contours to your face, while the slip Silk Sleep Mask provides a luxurious silk option that feels soft against your skin.

Most sleep masks can be hand washed with mild detergent, but always check the care instructions. For instance, the MyHalos 3D Sleep Mask is designed to be durable and easy to care for, while silk masks like the LitBear Silk Sleep Mask should be handled more delicately to maintain their quality.

Yes, certain sleep masks are designed specifically for side sleepers, like the LitBear Sleep Mask. It features a unique tilt design that reduces pressure on your temples and ensures comfort while sleeping on your side.

For travel, look for lightweight, compact masks with good light-blocking properties. The Mavogel Cotton Sleep Mask is a great choice as it’s portable and effectively blocks out light, making it ideal for naps on the go.

Absolutely, the Gritin Blackout Sleep Mask is a cost-effective choice that still offers excellent light-blocking and comfort features, making it suitable for those on a budget.

Materials can significantly impact comfort and effectiveness. For example, silk masks like the slip Black Silk Sleep Mask provide a luxurious feel and help reduce friction, while cotton masks like the Mavogel Cotton Sleep Mask are soft and breathable.

Silk sleep masks, such as the LitBear Silk Sleep Mask, provide a soft, breathable experience that can help prevent skin creases and protect hair. Their natural properties also offer a luxurious touch that enhances overall sleep quality.

Conclusion and Next Steps

Investing in the right sleeping mask can be a game changer for your sleep quality. Look for materials that provide comfort and durability, and ensure the fit is appropriate to block out light effectively. Remember to also consider your personal preferences, such as fabric type and mask shape, to find a product that suits your needs. With so many options available, take your time to compare features and read user reviews. A great sleeping mask could transform your rest and rejuvenate your days. Ready to enhance your sleep experience? Explore these curated products and discover the difference a quality sleeping mask can make!

Shop now for your perfect sleeping mask!