Effectively blocking lights and allows your eyes freely blinking. Ideal for meditation, Yoga, travel, napping, insomnia. Fit all size head circumference, fully adjustable buckle strap, easy to adjust and not catch hair. Top quality fiber fabric never stain bed sheets or pillows. Memory foam makes you feel comfortable. Unique heat-bonded technology instead of glue, sturdy and durable, no easy to fall apart. No pressure on eyes, eye space is wider and deeper than other flat eye mask (Silk eye mask will oppress eyes). Low - Rebound Memory Foam, Soft and Comfortable. High quality sponge is featured with deformation. Unique 3D design, which will add no stress to your eyes. Effectively block light to make you relax and get into sleep easily. high quality.