Adjustable Face Mask with Valve

The Churchill Pro face mask from Cambridge Mask Co. Package is opened, but everything is unused as the mask is too big. Size large fits 170x200mm (see Cambridgemask.com for more sizing information). The Churchill PRO is a reusable, lightweight, and breathable face mask. This certified face respirator has a snug fit for maximum protection. • Filters almost 100% of pollution, gases, allergens, smog, and pollen • Filters 99.6% of all viruses and 99.7% of bacteria • Filters PM10, PM2.5, PM0.3 • Lasts up to 340 hours of active use (3 – 6 months) • Ideal for people at risk of respiratory diseases, living in or travelling to areas with high air pollution / smoke levels • Adjustable ear loops with toggles for secure snug fit • Fit with a valve to help regulate Co2 build up • Head-straps and Nose-foam are included.