Exterior: 600D ripstop polyester, waterproof coating, welded seamsLining: cotton polyester (50% polyester / 50% cotton), nylon 190T (chest and bottom)Filling: 100g polyfillHardware: chrome-plated zincWaterproof: 3000 mm, breathable: 3000 g/m² 24 h and windproofNo back seamTwo adjustable front straps with quick-release clips and VelcroShoulder gussets / Adjustable crossed strapsAdjustable and removable elastic leg straps / Rounded tail flap