[Product Information]

►SAVE SPACE and SHAVE WEIGHT with ultralight premium quality duck down filling (superior to synthetic) - nature's best light insulator with the highest warmth-to-weight ratio to beat the cold outdoor winter weather. Buy now and have zero regrets.
►STAY WARM as a result of duck 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 (weighs less than 4.08 lbs for size Regular and 4.30 lbs for size Long) 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 two YKK zippers， wide shoulders and large footbox， snag-free velcro， drawstring， horizontal baffles， and compression stuff sack case for storage included. Comes in size Regular or Long (Tall / XL). Equipped for the trailhead， from the Alps to Everest.
►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!