Evaric American M50 Gas Mask Double Filter Fan CS Edition Perspiration Dust Face Guard Note:This product can not be used as anti-virus protection. It is used for Outdoor survival game (World-Wide-AR GAME) Military training and film and television shooting. Canister battery compartment and the fan system, the no canisters function, disassembly,be sure to follow the instructions to open to avoid human-caused damage Package size:25cm x 25cm x 25cm (9.84in x 9.84in x 9.84in) Package: 1x mask