Enjoy chilly weather with the Marmot Reactor 1/2 Zip fleece jacket. Made from Polartec Classic 100 weight micro-fleece, this men's fleece jacket is great for a warm first layer or lightweight jacket. The fabric's 100% polyester velour construction creates air pockets that trap air and retain body heat. Another benefit of the Polartec material is that it maintains its insulating ability and non-pill appearance after repeated laundering. The Reactor 1/2 Zip also incorporates flat lock construction, which creates flat seams to eliminate chafing and provide a more comfortable, seamless feel. This jacket has a bonded zippered sleeve pocket to keep keys or other necessities close at hand. The Marmot Reactor 1/2 Zip is a sleek fleece jacket that will be a staple in your closet for innumerable outdoor activities. Polartec Classic 100 weight micro-fleece Flat lock construction for extra comfort 12"" center front zip Bonded zippered sleeve pocket Regular fit .