Hyke & Byke Snowmass 0 Degree F 650 Fill Power Hydrophobic Down Sleeping Bag with ClusterLoft Base About this item SAVE SPACE and SHAVE WEIGHT - Our new 2019 model is designed to maximize durability, warmth, and water resistance. Our quest for the perfect solution led us to utilize Hydrophobic 650 FP Duck Down with a revolutionary ClusterLoft base. ClusterLoft performs better than down for durability under compression and moisture resistance. STAY WARM and DRY as a result of Hydrophobic Down insulation capabilities and waterproof fabrics - the microscopic air clusters found in down feathers creates "loft" that traps heat and keeps you warm from 10 to 40 degrees. HIKE FARTHER with the LIGHTEST MUMMY DOWN SLEEPING BAG available (Short: 3.23 lbs., Regular: 3.38 lbs. & Long: 3.56 lbs.) for this quality at the price. Compare to other major brand names to see the price difference we achieve through direct-to-consumer sales. Summit any mountain or camp by the summer sea with these compact bags and have room for carrying your favorite fleece blanket or silk liner, goose filled pillow, and pad. LONG LASTING DURABILITY from ultralight water repellent 400T 20 D ripstop nylon fabric liner with double large YKK zippers and anti-snag slider, wide shoulders and large footbox, snag-free velcro, drawstring, horizontal baffles, and compression stuff sack case for storage included. Comes in size Short (Individuals up to 5'6"), Regular (Individuals up to 6'), and Long/Tall/XL (Individuals up to 6'6"). Use for camping, back packing,