-- Breathable, High Quality Material! Mesh ventilation design. -- Filters can be replaced, protects you from dust, fog, virus and cold wind. -- Double air valve design, air resistance is smaller. 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. -- Hanging ear design, makes the mask won't fall when cycling or running. -- Long life time: More than 2 years for the mask.
External Material:Neoprene, flexible, elastic, dust and hot