1/ Front panel pin holes design, which serves as an optical therapy for short sight illness. You can see clear image comfortably when put on the eyemask. 2/ It greatly improves sleep quality and relaxes a tired spirit. 3/ Adjustable velcro strap can best fit to all different human faces. 4/ Elevated soft pad offers adequate room for eyes blinking and rest in well dimness. 5/ Soft touched felting is comfortable and well-ventilated. 5/ Classic black with cool characters deco delivers the trendy impression."