Pack of 4 premium children's cotton face masks. Washable and reusable time and again. Each mask features 3 layers of cotton and for an extra comfortable fit two black elastic over ear straps are adjustable in length using a simple slide mechanism. For an extra comfortable fit two black elastic over ear straps are adjustable in length using a simple slide mechanism. A squeeze tight, secure nose clip provides better protection against the possible transfer of airborne particles. The mask is a non-medical device but will protect against solid particles and droplets. Hand washing in a mild detergent is recommended after each use, rinse well and dry before using again.