Material: Cotton+Nylon Windproof & Cold Resistance Fashionable Winter & Spring Cold Weather Warm Mask Size Adjustable with Fastener Tape: Easily adjust the mask tightness with Velcro,suitable for most of size head. THE BEST HEALTH CARE : Ideal to protect your mouth and face from dust,wind,cold,pollen, allergy, flu,fog & haze,vehicle exhaust,passive smoking etc. WIDELY USE: This Mouth Mask Ideal for Dust, Germs, Allergies, Smoke, Pollution, Ash, Pollen,Crafts,Gardening,Travel, Anonymity reusable and re-washable.