😷 The Universal 4521 cotton mask is 100% cotton and provides a comfortable barrier against airborne irritants.
😷 The Universal 4521 mask is made from two layers of different density cotton: the black outer layer is less dense (21S), designed to block larger particles. The white inner layer is denser (26S), designed to block smaller particles. Both layers are extremely soft and are designed to help disperse moisture, making the Universal 4521 comfortable for daily wear all day long.
😷 The Universal 4521 mask can be washed by hand and hung to dry, or washed with a normal load of laundry in warm water and tumble dried on a medium heat setting. The mask can shrink slightly if it’s washed or dried in high heat, but it easily stretches back to form with a few firm tugs at the top and bottom of the mask.
😷 The Universal 4521 mask is unisex and it will fit most face sizes. It has stretchy elastic ear-loops and an adjustable nose bridge that provides a close but comfortable fit with minimal gaps. With a snug fit, the chances of unfiltered air entering or escaping are minimized. The snug fit around the nose bridge helps to greatly reduce the buildup of fog on your eyewear.
😷 This mask is not NIOSH approved. It is not for use against silica, asbestos or other harmful substances.