The Kids Face Mask fits age 2 yrs – 10 yrs (depending on the size of the face). The inner fabric is 100% Cotton percale 200 thread count. The outer layer is 100% Silk. Both fabrics are natural fibers that allow for breathability and comfort. This mask will not cause skin irritation or sweating. Please use natural/eco-friendly detergents when washing. Handwash or wash on a delicate cycle.