Reusable YOUTH/KIDS Sized 3 layer antimicrobial polyester mask. Inner filter pocket, hidden nose clip between first two layers to form fit to face. adjustable elastic tension ear bands for a perfect fit. Lightweight dense thread count polyester, breathable face mask. DISCLAIMER: MASKS ARE NOT MEDICAL GRADE TESTED. HOWEVER POLYESTER TESTED MORE EFFECTIVE THAN COTTON BASED RESEARCH BY TEXAS A&M.