This mask is made of 100% silk charmeuse and three layers of cotton. Very light weight, comfortable to wear, and breathable. Machine washable on delicate and hang dry. This mask is solely for personal protection and has not been evaluated by the CDC or FDA, and is not a substitute for N95, surgical or procedural masks. Not recommended in poor air quality conditions, when experiencing breathing difficulties or while sleeping. Not recommended for children under 3 years old.