Included packaging: 30 five-layer activated carbon filter elements, 12 replacement exhaust valves, 100% brand new and high quality (not included) Activated carbon filter can isolate non-toxic dust, pollen, smoke, common air irritants and other non-oily particles Reminder: Replace the filter, disposable consumables cannot be cleaned. It is recommended to replace once a day Wide range of applications: the face filter is very suitable for all outdoor and indoor sports, such as running, jogging, biking, motorcycle, biking, hiking, skiing, snowboarding, paintball, mowing, public transportation and other activities High-quality materials: made of sturdy, lightweight, breathable full-mesh nylon material