Activated Carbon Filtration Dustproof Mask, Bicycle Cotton Mask Anti Pollution, Pm 2.5 Respirator With Filter Filtration Cotton Sheet Valves Exhaust Gas Anti Pollen Allergy For Running Cycling

Description

Features:  -- Breathable, High Quality Material.  -- Filters can be replaced, protects you from dust and cold wind. -- Double air valve design, help you breath easier and freely when riding the bike. -- Can adjust the mask freely with velcro strap according to you own demands. -- Neoprene fabric. Touch gentlely, efficient to keep warm. -- Long life time: More than 2 years for the mask. Specifications:  External Material: Neoprene, flexible, elastic, dust and hot Internal Material: nonwoven fabric, polyester wadding, charcoal, flannel, velcro fastening, new design Installation of Mask Filter:   1. Open the mask to expose the interior of the filter valve 2. According to the OPEN directions on the valve, turn the valve counter(clockwise), to separate the valve 3. Remove the filter 4. Replace the new filter, reverse the above steps, clockwise rotation of the valve, over