leeads Bohse Onkelz Mask [Design Note]: Full-width printing, single-sided printing [Material description]: 100% polyester fiber (polyester), protective 5-layer activated carbon filter, M-shaped nose clip [Product performance]: Very soft, breathable, water-repellent and washable. The buckle can adjust the elasticity. You can change its length according to your face contour to prevent leaving traces on your face after taking off. Protect your mouth and face from dust, cold, dust, pollen, allergies, fog and haze, exhaust emissions, passive smoking, etc. [Applicable scenarios]: Suitable for cycling, camping, running, traveling, climbing and daily use. (Non-medical masks) [Accessories structure]: 1 is equipped with 16 pm2.5 filters [Washing instructions] It is recommended to wash by hand, do not bleach.