Eolus 0°F Ultralight 800FP Goose Down Sleeping Bag

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This premium quality Ultralight 0°F 800FP Hydrophobic Goose Down Mummy Sleeping Bag is our lightest, most compressible bag that we offer. Professionally designed for thru-hiking, backpacking, and camping, this bag boasts superior weight-to-warmth ratio and 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®
  • Professionally designed for thru-hiking, backpacking, and camping, this bag boasts superior weight-to-warmth ratio and the ultimate sleeping bag for saving space and weight.

    Key Features

    SAVE SPACE and SHAVE WEIGHT with ultralight premium quality Hydrophobic 800 Fill Power goose down filling - nature's best light insulator with the highest warmth-to-weight ratio to beat the cold outdoor winter weather.

    STAY WARM: Experience the result of WR 800 Fill Power Goose 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 10 to 30 degrees.

    HIKE FARTHER with the LIGHTEST MUMMY DOWN SLEEPING BAG available (weighs ONLY 2.90 lbs. for size Short, 3.10 lbs. for size Regular and 3.36 lbs. for size Long) for this quality at the price. Compare to other big brand names to see the price difference we achieve through direct-to-consumer sales.

    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).


    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 $400+ 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.

  • 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 www.HykeAndByke.com (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.