Snowmass -17°C Ultralight 650FP Down Sleeping Bag

Size chart
  • Ships from UK

    Ships from UK

  • Arrives in 2-5 Business Days

    Arrives in 2-5 Business Days

  • Orders Over £50 Ship Free

    Orders Over £50 Ship Free

  • Lifetime Warranty

    Lifetime Warranty


A toasty warm four-season bag, our ultralight Quandary -17º Hydrophobic 650FP Down Mummy Sleeping Bag will keep you warm even when temperatures drop well below freezing. Professionally designed for thru-hiking, backpacking, and camping, this bag boasts excellent weight-to-warmth ratio and is the ultimate sleeping bag for saving space and weight.



Shavano 32ºF

Quandary 15ºF

Snowmass 0ºF

Eolus 30ºF

Eolus 15ºF

Eolus 0ºF

Insulation Type Hydrophobic 650 FP 80/20 Duck Down Hydrophobic 800 FP 90/10 Goose Down
Main Feature Ultralight 3-season sleeping bag. Small pack size. Warmer 3-Season Bag Ultralight Value Warmest 4-Season Comfort Lightest and Smallest Bag Available Lighter Option than the Quandary 15ºF Ultralight Option for a 0ºF Mummy Down Bag
Comfort Temperature 60ºF / 15ºC 50ºF / 10ºC 30ºF / -1ºC 58ºF / 14ºC 50ºF / 10ºC 30ºF / -1ºC
Comfort Limit 45ºF / 7ºC 30ºF / -1ºC 15ºF / -10ºC 43ºF / 6ºC 30ºF / -1ºC 15ºF / -10ºC
Survival Limit 32ºF / 0ºC 15ºF / -9ºC 0ºF / -17ºC 30ºF / -1ºC 15ºF / -9ºC 0ºF / -17ºC
Total Fill Weight (Short/Regular/Long) 370 / 390 /410 grams 600 / 640 / 690 grams 890 / 930 / 980 grams 345 / 365 / 385 grams 570 / 620 / 670 grams 820 / 870 / 920 grams
Total Pack Weight (Short/Regular/Long) 2.02 / 2.13 / 2.24 lbs 2.56 / 2.71 / 2.89 lbs 3.23 / 3.38 / 3.56 lbs 1.80 / 1.93 / 2.13 lbs 2.34 / 2.54 / 2.80 lbs 2.90 / 3.10 / 3.36 lbs
Compressed Pack Size 6.5" x 10" 7.5" x 11" 8" x 13" 6.5" x 9.5" 7" x 11" 7.5" x 12.5"
Shell Fabric / Base DWR-Coated 400T 20D Rip-stop Nylon Fabric / Clusterloft®
  • Featuring a down upper fill for maximum warmth retention, and a ClusterLoft advanced synthetic underside fill for sweat resistance and durability, this -17º hybrid sleeping bag packs down small is a perfect balance for all-around use. Our 650FP line is cut slightly roomier than the Eolus line and has a more even top-to-bottom fill ratio making it a good choice to use even without a sleeping pad.

    Key Features

    SAVE SPACE and SHAVE WEIGHT with ultralight premium quality Hydrophobic duck down filling - 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: Experience the result of WR 650 fill power duck down, a revolutionary ClusterLoft base, and waterproof fabrics. The microscopic air clusters found in down feathers creates "loft" that traps heat and keeps you warm from -7 to 5 degrees.

    HIKE FARTHER with the LIGHTEST MUMMY DOWN SLEEPING BAG available (weighs ONLY 3.23 lbs. for size Short, 3.38 lbs. for size Regular and 3.56 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 large YKK zippers with anti-snag sliders, wide shoulders and large footbox, snag-free velcro, drawstring, vertical baffles, and compression stuff sack case for storage included. Comes in size Short, Regular or Long (Tall / XL). Equipped for the trailhead, from the Alps to Everest.

    WANT 25% LESS WEIGHT and THE SAME WARMTH? Check out our Eolus -17°C 800FP Goose Down sleeping bag.


    The Hyke & Byke Difference

    A USA based outdoor gear brand that started small but has quickly made a big impression on outdoor enthusiasts across the country (men, women, and kids alike). Our company's 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.

    How We Operate to Save You Money

    Our business model revolves around keeping operating costs extremely low to provide premium quality products at the absolute best price. We achieve this through running our business completely cloud based, with no added expenses for servers, commercial property, extra equipment and hardware.

    Other brands charge £200+ for similar bags. Don't pay more just to cover their unnecessarily high overhead and operating expenses.

    Trail Ready

    For all of your outdoor adventures or travels, this bag will become your favorite and most coveted item on the packing list.

    Dimensions by Sleeping Bag Size

    • Short: 72" long, 26" wide at the shoulders, 21" wide at the hips, 11" wide at the toe box (bottom), and 56" of shoulder girth Short size bags are best for individuals up to 5'-6" tall.
    • Regular: 78" long, 28" wide at the shoulders, 22" wide at the hips, 11" wide at the toe box (bottom), and 59" of shoulder girth Regular size bags are best for individuals 5'-7' to 6'-1" tall.
    • Long: 87" long, 32" wide at the shoulders, 26" wide at the hips, 14" wide at the toe box (bottom), and 64" of shoulder girth Long size bags are best for individuals 6'-2' to 6'-6" tall.

  • We want you to love your Hyke & Byke gear as much as we love designing and making it! If for any reason you are not completely satisfied with your purchase, we gladly accept returns on orders shipped within the US within 30-days* of purchase. For items to be returned, they must be purchased on (see below for Amazon orders) unworn, unwashed, still have tags attached and be in sell-able condition. To learn more about our Returns and Exchange policy Click Here.