With the Prime Polar down sleeping bag from Pajak, mountaineers, cyclists, trekkers and campers will have an excellent bag designed for a variety of uses. This sleeping bag offers a perfect balance of warmth, quality and pack size. In fact, the pack size is so small that the Prime Polar will only take up 5 litres in your pack. For protection and easy transport, the sleeping bag comes with a stuff sack as well. Whats more, the down sleeping bag is extremely light, weighing in at only 800g. With 470g of goose down, the bag has a comfort rating of 1°C and an extreme rating of -22°C, but you cant expect it to be comfortable when the temp is that low! But, you can rest assured that the 3-season sleeping bag will keep you toasty warm in temperatures hovering around right around freezing. The down used by Pajak for the Prime line boasts a fill power of 750 cuin and is certified according to the Oeko-Tex 100 Standard. So, both quality and animal welfare are guaranteed. This lightweight mummy bag with super-warm down fill is perfect for outdoor adventures in autumn and spring when the temps are a bit cooler. For use in winter, youd need more insulation.