The Sleep Mask Is Reversible and Can Be Used on Both Sides.

Adjustable Strap: Unique ear-hanging adjustable strap, will not tangle hair, soft, easy to wear, side sleep, turn over without slips, suitable for women and men. Four Seasons Use: One side of the use of ice silk cool feeling fabric, feel cool and comfortable when using, the other side is the use of high-quality polyester fabric, feel warm and soft when using, to meet the needs of different climate use. Block Out Light: sleeping mask material is soft and comfortable, the edge fits the face well, and covers a large area, Effectively blocking lights. The mask is very good at keeping the light out, even on very sunny days. Lightweight：This Sleep mask only weighs 0.04Ib, so there is no pressure on your eyes when you wear it. This will help you if you are prone to headaches with sleep masks.