So lightweight yet so warm, the full-zip Peninsula Insulator Jacket is built to ward off the cold and other surly elements. The Primaloft Black Series Insulation offers ultimate softness, warmth and comfort, while pockets with RAPIDraw pass-through and a hidden chest pocket keep you confident and ready. The main body features our extra tough mini ripstop fabric with plain weave overlays and a DWR finish. But there's more. The Insulator folds into a removable stuff sack that fits in a hand pocket. Portability rules.