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. (XS) Full zip Light Weight Insulation Jacket Concealed left chest pocket Internal right chest pocket with zip closure RapiDraw™ pass through access Adjustable hem with internal shock cord adjustment system Packs into removeable stuff sack (found in hand pocket)