Sewn-in Pocket for optional removable filter (filter not included). 2 Ply 100% cotton fabric, 160GSM. Meets requirements for non-surgical face covering (no BFE rating). Reusable and machine-washable. Poly Bagged In Sets Of 25. Size fits most adults. Mask coverage size: 8"W 6"H ( size may vary up to half an inch.) Care Instructions For best fit and comfort, wash before use. Wash on delicate cycle in cold water. Do not use bleach. Air Dry or tumble dry low heat. 8" W x 6" H