Filled with 420 gms of highly water resistant DWR 785+ Loft down DWR Loft - The down in this sleeping bag is treated with a durable water repellent polymer that protects the down from moisture while also improving the loft Outer and Inner shell made from Ultra - light 15 Denier nylon with DWR finish Box walled construction for warmth and weight efficiency Radial Arc Baffle System maximises baffle loft height Differential cut reduces the potential for cold spot compression Contoured Hood keeps down evenly distributed around your head Toaster foot pocket for air activated heat pad Oven door foot venting system for temperature regulation Tuck stitching for increased durability of baffles Baffles sewn with Hydrophobic Epic thread which prevents moisture from wicking inside the shell YKK Full length side and foot zips to increase versatility Left and right hand models can be zipped together Oversized 3D draft tube with anti-snag tape retains heat Nylon 210 denier laminated anti snag tape runs along zip Internal shoulder collar muff retains body heat Recessed draw-cords for comfortable warmth retaining closures Supplied with ultra-light siliconised nylon compression sack Large storage bag with printed care instructions