[DETAIL] Frequently Asked Questions 1. How is the shading effect of the sleeping mask? Our eye mask is designed with a 3D three-dimensional structure, with an adjustable shade design added at the bridge of the nose to fit the curve of your face in all directions and avoid light leakage, so you can sleep well even when lying in the sun 2. Will wearing your eye masks cause pressure on my eyes? No, our eye mask with 3D structure, zero pressure design, so you can easily open your eyes while wearing the eye mask, your eyes will not be harmed by the pressure of our sleep eye mask, including your eyelashes, your eyelashes still have room to move. Easy and comfortable, zero burden on sleep. 3. What size of head do your eye masks fit? Our eye mask is designed with adjustable buckle elastic band, suitable for people with head circumference around 40cm-75cm (15.75-29.5 inches), you don't have to worry that it will strangle your head because the band is too short. Tip: Hand wash the eye mask with neutral detergent. It is easily damaged after machine washing. Should be dried in a cool place [ATTRIBUTES] - Function: Light Blocking Sleep Aid - Is Batteries Included: No - Hign-concerned Chemical: None - Function: Light Blocking Sleep Aid - Is Batteries Included: No - Hign-concerned Chemical: None - Number of Pieces: One Unit - Eyeshade Type: 3D Eyeshade - Type: Eyeshade - Origin: Mainland China - Item Type: Sleep & Snoring