Dirt Bandits are great for protection against well dust obviously, the sun, the cold, the wind and they look cool. Slides over the head so there's no uncomfortable knot at the back of your neck and is completely reversibleFeatures include:Neck Opening: S/M: 15"M/L: 18"One side is a tech material for comfort and stability The other side is a brushed rayon/poly blend and is perfect for cleaning glasses, your face, your phone, camera lens.... whatever :) One size fits most and it is lightweight enough for those warmer day adventures. 90% polyester 10% spandex The fabric is completely water, sweat, and wrinkle proof so it's perfect for:Bike packing, or really any form of bike ridingHiking, backpacking Skiing and snowboarding Or just adding a comfy accessory to any workout outfit. Isn't it time that you can play in clothes that look cute too.Lynt: Adult play clothes. MADE IN CALIFORNIA