Strategic quilting over shoulders and back to stabilise insulation. 20D Proflex™ Stretch Woven Nylon 2-layer Waterproof Technology (84g/m²) HH: 20,000mm and MVTR: 30,000g/m²/24 hrs. Insulation: 80gsm PrimaLoft® Silver Insulation (100% Recycled Content) upper front torso, sleeves and back with 40gsm split insulation on lower pockets.