Extraordinary warmth for minimum weight, this Pertex® Quantum down jacket is a gamechanger for alpinists. Combining TILT tech with 900FP down and offset baffle construction, its our warmest lightweight down jacket yet, the product of extensive R&D. 10D Recycled Pertex® Quantum nylon ripstop (28gsm) with fluorocarbon free DWR Lining: 10D Recycled Pertex® Quantum nylon ripstop (28gsm) Secondary Lining: Scrim: 100% polyester scrim with aluminium coating (15gsm) Main Insulation: 900FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (240g / 8.5oz, Size M) Offset box wall baffles with TILT scrim on torso boosts core warmth Stitch-through construction on arms and hood reduce weight and increase mobility Helmet compatible down-filled hood with rear elastication, concealed internal adjustment and stiffened peak for increased protection Precurved and articulated sleeves for improved fit and movement Lightweight YKK® VISLON® centre front zip with fleece lined chin guard YKK®