1. LIKE A HUG FOR YOUR HEAD: 's silk sleep mask's signature four-pod design allows you to wear the mask ly across your head to apply gentle, evenly distributed pressure for a comforting fit & soothing experience. 2. USE THE WAY YOU LIKE: 's silk sleep mask is the only weighted sleep mask designed for side sleeping, yet engineered for all sleeping positions. Silk on one side, Jersey Cotton on the other. No Velcro, No Straps, No Tension, No Bed Head! 3. LIGHT BLOCKING FIT: blackout design contours to your face for a completely light-blocking experience to help you relax, find relief, & fall asleep faster. Four soothing microbead pods contour to your eyes for deep, restful sleep in any position. 4. PREMIUM MATERIALS: Our silk sleeping mask is made from the finest premium 6A Grade, 22 Momme Silk which is durable and long-lasting. is fully machine washable.