Performance: Protects your mouth and face from dust, cold, dust, pollen, allergies, fog and haze, exhaust emissions, passive smoking, and more. Soft, breathable, water-repellent, washable, adjustable elasticity with buckle, you can change its length at will according to your facial contour to prevent leaving marks on the face after taking off. Application: Suitable for cycling, camping, running, traveling, climbing and daily use. (Non-medical masks).