Pure Placid Sleep Mask - Blue: With a 99% customer approval rating and hundreds of thousands of sleep masks sold, this is the best sleep mask on the market. The Pure Placid Sleep Mask - Blue is specifically designed with the utmost comfort in mind—the soft, ultralight design blocks light fully and gently hugs the face without pressure using the adjustable Velcro strap that connects at the back of the head. Deep molded cups allow space between the eye and the mask so you can blink freely without pressure. Made with a fabric that is extremely lightweight, breathable, flexible, and durable, a good nights sleep is guaranteed!