Alpinestars Men's Cyclone Functional Jacket Technical main construction featuring three layers - 100% advanced poly-fabric outer shell Technical main construction featuring three layers: 100% advanced poly-fabric outer shell, windproof membrane, plus a brush polyester lining Side, back and rear arm panels made with stretchable and breathable poly-knit fabric Soft touch collar lining increases level of comfort Full-length Ykk frontal main zipper; Medium-sized back storage pocket Longer back hem for extra coverage; Hem is backed with silicone printing to help keep jersey in place