Effective protection against airborne germs, allergens, dust, & pollution. Each mask contains 1 x PM2.5 activated carbon filter for five layers of filter protection. All masks are re-usable and filters are replaceable. Filters should be replaced regularly (we recommend replacing every 5-7 days under normal use) and more often in dusty environments. - Adjustable ear straps to suit a variety of face shapes and sizes. - Machine Washable (60°C after each use) - 93.9% Polyester, 6.1% Elastane. Please note: this is not a medical device. This face covering does not provide protection against coronavirus (COVID 19) however may help to reduce the risk of transmission in an infected person. Face coverings should not be used as a substitute for social distancing or self isolation. Face coverings should not be worn by those with difficulties breathing or whilst exercising. Not suitable for children under 7 years of age.