This mask includes 3 layers of protection. Elastic adjustable ear loops, and a valve. It is washable, ironable and reusable. Adjustable Reusable Face Cover (Pack of 1 mask 1 filter). Low air resistance Breathe More Smoothy. PM2.5 (KN95 filter) Anti Haze Mask Breath Valve Cotton Masks Anti-dust Mouth Mask Winter Earmuff Activated Carbon Filter Respirator. Washable up to 86°F. Ironable up to 212°F. Extra filters in packages of 5 units. In 3 colors Navy Blue, Black and Red. It is easy to put 2 filters for more protection if needed.