LIFETIME WARRANTY – Hyke & Byke products are 3rd Party Tested and IDFL Certified so you know you are getting what you pay for! Our gear has been tested on adventures worldwide by 60,000+ customers. SAVE SPACE and SHAVE WEIGHT – Filled with 625 Fill Power advanced synthetic, this 0-degree bag is super light, compact, and compares to a 625 fill power Down Bag but has better durability and moisture resistance. STAY WARM and DRY as a result of Hydrophobic insulation capabilities and waterproof fabrics – the microscopic air clusters found in our advanced synthetic creates “loft” that traps heat and keeps you warm. Extreme Limit is 0 Degrees F, Lower Limit (men) is 10 Degrees F, and Comfort Limit (women) is 32 Degrees F. HIKE FARTHER with the LIGHTEST MUMMY DOWN SLEEPING BAG available (Short: 3.69 lbs., Regular: 3.87 lbs. & Long: 4.05 lbs.) for this quality at the price. Compare to other big 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″). HYKE & BYKE is a new brand of outdoor gear that started small but has quickly made a big impression on outdoor enthusiasts across the country (men, women, and kids alike). Our cosmic vision of providing double the value for every person (youth or adult) looking to go outdoors is possible through beating the big brands at cutting costs and connecting with our customers. See how we cut costs in our description below!