iFlex 10D Nylon Ripstop DWR Imported AEGIS-Ultra Future has a unique down channel, our goal is to give it a warmer effect with crisscrossing down channels.The vertical lining baffle design has warm seams and a wind barrier at the zipper to prevent cold air from entering the sleeping bag. We fill the AEGIS-Ultra Future with 800FP ultra dry down instead of the regular 650FP. After testing, it has higher warmth and fluffiness . The fabric of AEGIS-Ultra Future is very unique. We use ultra-light 10D nylon material and it has a water resistant coating. The ultra-dense material effectively prevents down drilling out.We provide you with free compression bags and loose mesh bags. The Ultra Future has zippers on both sides, making it easier for you to enter and drill out of your sleeping bag. Inside the Ultra Future, you are free!..The long zipper size is 160cm, and the short zipper size is 90cm. ULTRA FUTURE-II Regullar: Fill weight:830g | Sleeping bag weight:1187g | Total weight: 1250g | Package size: 38x20cm | EN Limit -18° C/0° F | EN Comfort -10° C/14° F AEGIS-Ultra Future has a unique down channel, our goal is to give it a warmer effect with crisscrossing down channels.The vertical lining baffle design has warm seams and a wind barrier at the zipper to prevent cold air from entering the sleeping bag.