The minimalists dream sleeping bag & perfect for mountain marathon. Using a new Point Zero ripstop Nylon outer & Primaloft One insulation to produce a bag for conditions where weight versus performance is critical. Pack size is teeny tiny & overall weight is only 380g...yes only 380g! Point Zero fabric is an incredibly lightweight material with great tear strength & water/wind resistance. Primaloft One is about the best synthetic insulation available today. Primaloft is lightweight completely hydrophobic & retains warmth even when soaking wet. OMM uses 60g on top of the bag, 40g insulation on the bottom & the foot box is made with 60g insulation for added comfort. This combination of fill weight maximises performance & weight. Be under no impression that this is nothing other than a minimalist bag, the photo shows it all puffed up & toasty looking, but it is aimed squarely at weight freaks & mountain marathoners who place comfort way down on their list. To maximise performance of this bag a good insulating sleep mat is absolutely essential. OMM give no temperature ratings for the Raid, but it was designed specifically to be used on the Original Mountain Marathon which is held in late October. The Raid can also be used as an emergency mountain bag or as a super lightweight travel bag for warmer climates. Stitched through inner with loose laid outer short 1/4 YKK zip with locking runner Mummy Shape Hood Drawcord Fast Drying easy care Hang Tags on base Primaloft One Synthetic Insulation