Main Fabric: 100% Polyester / / Main Lining: 100% Polyester / / Filling: 100% Polyester. On the practical side, this jacket has a large collar with a half-zip, an adjustable hood,numerous pocketsto store your small important items as well as waterproof seams for optimal protection. The cut is slightly oversized for your comfort andventsunder the arms will allow you to regulate your temperature during intense effort