Goliton Wind/Dust/ Cold-Proof Face Mask with filter for Cycling bicycle Motorcycle ski Active carbon filters: can remove 99.9-percent of dust,chemicals,fumes and particulates,cold proof-Effectively protect your health. Easy replaceable filters. Durable neoprene: comfortable to wear, adjustable velcro strap. Dual valve exhaust: expels moisture buildup and easy to breathe.