INFORMATION: Size: 9.8×3.9×1.2in Weight: 0.08lb Without stretching the strap, the length of the eye mask and adjustable elastic strap is between 18-25.6in. WHY IS IT STILL LEAKING LIGHT? 1. The wing of the eye mask and the bridge of the nose fit should fit vertically. 2. Gently press on both sides of the nose to adjust the best shading effect. 3. Adjust the elastic band, don’t make it overly loose. Don’t put the strap too close to the ear, move it up. INTENDED USE: Blocks lights and doesn’t restrain eye movement. Ideal for meditation, Yoga, travel, napping accessories. CAUTION: Wash with water before use. Hand washing is recommended. The water temperature should not be higher than 40? (104?). After washing, it can be dried naturally. Do not twist or wring. Select high-quality memory rebound sponge, fit the face, effectively block out light, comfortable and breathable, and help sleep.Notes: It's recommended to use laundry detergent or shower gel to clean by hand washing, and the water temperature should not be higher than 40? (104?). After washing, just let it dry naturally, don't twist or wring. Comfort & deep sleep eye mask: Give you a comfortable deep sleep on night, if you are side or back sleeper. Ideal way to relax yourself during the flight, travel, Yoga, shift work, outdoor or indoor activities and the time you just want a nap or meditation. The 3D drowsy sleep mask doesn’t move easily, and you can get more energy to work or study by using it. Convenient blindfold with adjustable strap: The length of the blackout eye mask and adjustable elastic strap is between 18-25.6in without stretching the strap, and the head circumference greater than 65cm can also be used due to the elasticity of the strap. Less tangle your hair and hurt ears less. Easy to adjust, and generally recommended for adults or older children. Blackout sleep mask: Made of high-quality cotton and silky fabric, which is ultra soft, skin friendly and breathable, YUNAI eye cover for sleeping can give you a more comfortable sleeping experience. The material also have an effect of 99% light blocking. Only 0.08lb, lightweight enough that have less pressure on your face and you can sleep without the sense of foreign body. Concave Molded Night Sleep Mask: 3D contoured cup design makes the sleeping mask fits most nose shapes perfectly with zero pressure on eyes and less eyelash damage, which means you can blink eyes freely after wearing it.