Panegy Anti Dust Wind Cycling Bicycle Bike Motorcycle Animal Printed Camping Half Face Mask Spandex Fashion and streamlined cycling half-face mask design. Active carbon filters: can remove 99.9-percent of dust,chemicals,fumes and particulates,cold proof-Effectively protect your health. Carbon filters should be replaced wearing for 40-60 hours, NOT washable. Durable spandex: comfortable to wear, adjustable closure strap. Dual valve exhaust: expels moisture buildup and easy to breathe.