P1 Cup Type L-220 Series Product Description/Functions/Benefits Price : $65 1. Adjustable nose clip, high strength conforms to the material, suitable for each different nose shape 2. High-density exhalation valve to improve comfort 3. Effectively discharge hot and humid air without odor, ensuring smooth breathing 4. Elastic buckle and headband design make the mask more fit 5. Comply with CE EN149: 2001 + A1: 2009 FFP3 standard, P3 filtering effect of 0.3 micron oily and non-oily particles is not less than 99%