The Bula Sublimation Gator Dana is a warm gator plus windproof mask to protect your neck and face from exposure to low temperatures, wind and rain. The Polyester fabric provides outstanding warmth without weight, while being breathable and durable. The velour construction creates air pockets that trap air and retain body heat. Flat-lock seam construction reduces pressure points and irritation. The contoured face opening for great goggle fit curved in the back for the helmet fit.