Double Sides UsageOne side of the use of ice silk cool feeling fabric and the other of the use of high-quality cotton, sleep eye mask is applicable to four seasons no matter warm and cool weather. Lightproof S TypeNo pressure eyeshade is designed into S shape, enough coverage for face blocks out light perfectly. Anytime you want to have a night nap, it can make you fall sleep fast. Soft & VentilateBlackout blindfolds for sleeping are made of very lightweight material and bird eye cloth, so there is zero pressure force on your eyes, comfortable and not stuffy. Adjustable StrapElastic band with silicone lock button on eye masks, easy to wear and you can adjust the tightness to perfectly match different people. Package ContentDouble sided sleep cover measures 9 x 3.9" (23*10cm). 6 Stylish types for your selections, different sides different colors are convenient for daily use.