AstroAI 12 PCS Activated Carbon Filters Replacement Set for Reusable Dust Face Masks, with 4 Breathing Valves and 12 Soft Nose Pads, Fitting for Most Mask in Market

COMPREHENSIVE PROTECTION: 4-layer filter can remove non-oil particles in air including dust, and other non-oil based particles. Ideal for Running, Cycling, and other Outdoor Activities
EASIER BREATHING: One-way discharge valves allow breathe out; The increased ventilation lets heat and moisture escape, preventing eyeglasses from fogging
SUPERIOR CONSTRUCTION: This dustproof mask is made of premium Nylon, allowing breathe smoothly; Activated Carbon Filters protect you from dust pollution
COMFORTABLE DESIGN: Soft nose pad on filters and adjustable snap-on nose clip provide a better fit; Flexible ear loop reduces rubbing on ears; Replaceable filter increases ease of use
LONGER SERVICE LIFE: Included replacement filters sets (12 filters+12 nose pad+4 vent valves) extend service life for the dust mask; Mask is washable by hand to easily keep it clean