This Reusable Barrier Mask is a non-medical UNS 1 mask, washable and reusable 20 times (costing 8 cents per use), with a filtration efficiency of over 99%. Pack of 6 masks. For ages 4-10. This UNS1 category barrier mask protects against airborne particles, preventing the inhalation of infectious agents. It is highly effective against viruses. You can reuse this mask 20 times. Its ultra-high-performance filtration improves with each wash, guaranteeing optimal safety throughout the use of this barrier mask. Extremely soft and breathable, it offers comfortable wear and excellent durability. This mask guarantees optimal filtration for 20 washes. It offers 4 hours of effectiveness. AFNOR certified. Tested by the DGA and the Ministry of the Armed Forces. Color: white. Read more ↓