Package Details 1. Material: Polyester 2. Package Includes: 1 Pack Sleeping Mask 3. Patterns: Calendar 4. Size: 7.9In x 4In(20Cm x 10Cm ) Features 1. This eye mask is made of imitation silk fabric, which is healthy and breathable, has a good light-blocking effect, and is super soft and comfortable to wear. 2. Elastic adjustable buckle design, it will not move or fall off when you sleep, easy to adjust, double-sided design, both sides can be used. 3. The soft eye mask is a good helper to eliminate fatigue, improve sleep quality, and increase energy for work and study. It is suitable for various occasions such as indoors, outdoors, camping, traveling, shift work, meditation, yoga, etc. Washing Tips Hand wash recommended, air dry, do not use bleach. Premium Service If you have any other requirements, please let us know by e-mail when you order or receive this item. We will reply within 24 hours.Essential for Optimal Sleep: Our double-sided sleep mask is a must-have for anyone looking to enhance their sleep experience. Say goodbye to eye edema and hello to a more revitalized you!. Versatile Usage: Designed with both functionality and versatility in mind, our sleeping eye covers are perfect for various occasions. Whether you're at home, outdoors, camping, traveling, or even working night shifts, meditation, or yoga, our eye mask is the ideal companion. Perfect Size: Our sleep mask measures 7.9 inches x 4 inches (20cm x 10cm), making it suitable for different face shapes and sizes. Effectively blocks out all unnecessary light to create a perfect sleeping environment. Double-Sided and Adjustable Design: Our eye mask is double-sided and can be flipped for use, and features an elastic adjustable buckle, allowing you to easily customize the right size to your preference. Quality Material: Crafted from premium polyester, our sleep mask double-sided eye mask is not only healthy and breathable but also boasts an excellent light-blocking effect.