full title: DeeLink Outdoor Sport Mask Reusable Activated Carbon Dustproof Respirator Safety Mask Respirator Activated Carbon Anti Cold Sports Mask Filter Bicycle Mask Mountain Bike Riding Mask
3.5 out of 5 stars via 15 ratings
????Replaceble activated carbon filter: chelps you breath in a more clean way. Activated Carbon isolates 95% of dust, pollen l particulates etc. With the replaceable design, you only need to change the Filter instead of the entire mask.
????Somatological design provide most comfort to users. Comfortable fabric, adjustable nose pad and Ve/cro（hook and loop fastener） closure to meet most people’s specific needs.
????Two valves design act as blockers to the air, which help to achieve the effects of high altitude&low air concentration condition. This will increase the efficiency of your lung capacity training to some extent.
????Excellent in windproof and dustproof performance, typically good for buyers who like cycling, running, or doing other outdoor activities.