About this item 1 BESTSELLING SLEEP MASK ON AMAZON.COM. A sleep aid and eye relaxer, made of 100% top-quality 19 momme natural mulberry silk on BOTH sides. Only super-soft, super-smooth pure silk offers the breathable, cool relaxation of the soothing masks found at the world’s premier spas Gentle, easy-to-adjust headband won’t tangle hair or snag pillow like contoured masks that use VELCRO. And the plastic adjuster stays at the back of your head, not at your temples, which can be uncomfortable for side-sleepers. Fits comfortably with ear plugs and even with a CPAP facial mask. Fully adjustable strap from 15.8 inches to 27.6 inches, suitable for women/men/kids. Pure silk helps skin retain moisture, relaxing muscles and reducing the appearance of fine lines. Relieve insomnia and migraine headaches while promoting better blood circulation. Blocks out light for restorative rest and allows for melatonin production for natural sleep.