Product details Top highlights positive aspect Zip to add 10°F warmth when temps drop positive aspect Semi-rectangular shape lets you sprawl and shift freely positive aspect Arm holes keep you warm while accessing gear easily Alexa AI Summarized from product information 100% Recycled Nylon Imported Built for everybody and bodies of all shapes and sizes, the Boost 650 is an ultra-comfortable backpacking sleeping bag. WarmZip Tech is our patent-pending center zipper that can reduce the bag's internal space and tuck insulation around the sleeper to boost warmth by up to 10 degrees F (6 degrees C) An inclusive size range that includes Wide sizes for every length, as well as the centered WarmZip zipper, increases comfort for people with broad shoulders, those who toss and turn, and everyone who wants more room than a traditional mummy sleeping bag Multi-use arm holes make it easy to reach the WarmZip, read, make coffee, or play cards all while keeping warmth in and cold out 650 fill, RDS-certified down is hydrophobic to help keep you dry in inclement weather and is allocated to key areas for maximum heat efficiency and comfort Shell and liner are made with 100% recycled nylon that is soft to the touch and uses a PFAS-free DWR to further reduce the sleeping bag's environmental impact Regular size sleeping bag weighs 2 lbs 2 oz (0.95 kg) and measures 80 x 32 in (203 x 81.5 cm). Packs down to 12.5 x 7.5 in (32 x 19 cm). Includes storage bag and compression stuff sack