O2 Canada - O2 Curve mask 1.2, Premium respiratory protection, reusable face mask - 3 pack of filters included High nose bridge Fit - Brand new/sealed in box. Size High Nose Bridge Fit Brand O2 Canada Material Silicone About this item EXCEPTIONAL PROTECTION FROM AIRBORNE PARTICLES: Highly breathable filters ensure premium respiratory protection, filtering 98.6% of 2.5 micron particles. 3-Pack of filters included. Electrostatic filters are charged with pockets of both negative and positive ions, which attract, trap and neutralize small particles. Based on average use the filter can last up to 2 weeks. Additional replacements sold separately. EASY ON OFF: Ultra soft and adjustable silicone ear loops are easy to slip on and off while the neck strap keeps the Curve close for quick transition from rest-mode to on-face wear. Medical grade silicone face seal for extended-wear comfort. A one-time adjustment to head straps ensures a proper fit to the face with a secure seal. MINIMIZES EYEWEAR FOGGING: Dual exhaust valves allow for easy breathing during physical activity and minimize eyewear fogging by forcing air through the downward-facing valves. EASY CLEANING: Safely clean using soap warm water, standard dishwasher cleaning cycle, commercially available disinfection wipes or steam sterilization protocols (i.e. baby bottle sterilizer).