The Konig has a 600 denier ripstop, waterproof breathable outer. It has a mediumweight 200gsm polyfill with a breathable nylon lining. Double chest straps, front shoulder gusset, cross-over surcingles, leg straps, no back seam, tail flap and strengthened surcingle guides. In either fixed full neck or standard neck designs. Taped seams Ripstop Waxed stitching Breathable Waterproof 600 Denier 200gsm Polyfill Mediumweight