An extreme sleeping bag for extreme adventures. The Deuter Astro Pro 800 has a high quality down filling for maximum heat insulation. The design is lightweight and durable too so it\'s the perfect choice for mountaineers and adventurous backpackers.4 seasonMummy shapeArrow foot design - ergonomically shaped foot section allowing you to relax in a natural positionRDS certified natural down filling - high quality, high performance insulationFill power: 650+ cuinAnti-jamming zip stripsPFC-free water & dirt resistant coatingHeat collar with \'hook and loop\' elastic cord closure - adjustable for a precise fitInternal pocket - convenient storage for small items such as mobile phonesCompression stuffsack - small pack size for easy transportationColour: navy