The Monkey Man Jacket from Mountain Hardwear uses a special knitting process that yields a fleece that's warmer than most 300 weight fleece, and significantly lighter. It's insulative efficiency makes it an outstanding insulating layer and the great lines result in a snazzy stand alone jacket.Features: The cuffs, wrist panel, and waist are made with sealing Power Stretch fabric. There are two front zip hand pockets and a chest pocket. Specifications: Weight: 14.5 oz. Fabric: 100% polyester. Specifications based on size Large.