AstroAI Dust Mask, Reusable Face Mask with 7 Activated Carbon Filters and 4 Valves,Washable and Breathable Mask for Woodworking Mowing Gardening Cleaning (Black)

• 100% Nylon
• [PERFECT PROTECTION]4-layer activated carbon filter can effectively filter out 99% of dust, exhaust, particles, pollen, etc. It is ideal for running, cycling, skiing, hiking, and other outdoor activities, and provides reliable protection for daily use.
• [BREATHABLE & COMFORTABLE] Improved mesh material strengthens the ability of air circulation to ensure smoother breathing. A bonus soft nose pad can be attached to the filter if need, which can effectively reduce the friction on the nose.
• [ADJUSTABLE FOR OPTIMUM FIT] Adjustable hook and loop strap helps adjust to a suitable head size for snugly fit. You also can bend the soft nose clip inside the filter to the angle suit for your nose, getting better fitting and sealing.
• [AVOID GLASSES FOGGING] Larger filter with more coverage, attachable soft nose pad with fine sealability, adjustable built-in nose clip with better compatibility, all the humanized designs are made to prevent glasses from fogging.
• [REUSABLE & WASHABLE] Package includes 1 mask shell, 7 activated carbon filters, 4 breathing vent valves, and 7 soft nose pads. We recommend replacing the filter every 40 hours or more frequently. And the dust face mask shell can be detachable to wash by hand and wash machine.