Frosty overnights are no match for the Ignite Down 0°. Stuffed full with 600-fill DriDown insulation, this bag will stay drier, loft higher, and dry faster than standard down bags, giving you all the performance benefits of a down sleeping bag in a go-everywhere, sleep-anywhere package. The Ignite DriDown(tm) 0o will keep you warm with lots of key features. The box baffle construction with ground-level side seams and differential cut maximizes warmth and eliminates cold spots while the full draft collar and zipper draft tube with anti-snag design will keep the cold air out of the bag. The efficient, form fitting hood is warm and comfortable and the Fatman and Ribbon(tm) draw cords, with captured cord lock for one-handed adjustment, makes it easy to adjust. The bag is also easy to get in and out of with the 58″ dual-slider locking zipper. Also includes internal liner loops, sleeping pad security loops to keep you on your pad (straps sold separately), hanging loops, and a stuff sack. DriDown(tm) – What Is It, Simply put, DriDown represents the evolution of down insulation. Regular down is treated with a molecular level polymer to create a hydrophobic finish on each individual down plume. This finish allows DriDown to stay dry longer, loft better, and dry faster than untreated down, keeping you warmer in any environment. EN Tested: At the most basic level, the EN (European Norm) Test helps Kelty understand how much insulation is required to keep a person warm and comfortable through the night. The EN Test enables Kelty to confirm what temperature an average man will sleep comfortably and what temperature a woman will sleep comfortably in the tested bags. Ratings are based on the user wearing long underwear, socks and a hat, and sleeping on a 1″ thick pad. . Shell Material: 30D Nylon Rip stop. Liner Material: 50D Polyester Micro Pongee .