Light Blocking Sleeping Mask is made of cotton, which is not only soft but also very comfortable to wear. There is an opening at the back where you can put an ice pack to relax your eyes. Fits perfectly around your eyes and effectively block lights coming through eye and nose area, create a dark environment to help you fall asleep. With adjustable strap, flexible adjustment of tightness, suitable for different head size. Ideal choice for your relaxation and rest.