Product Name Unit Price Qty Subtotal Remove

Your Current Subtotal

$ 0.00

Questions on U.L. Spiral Down Hugger Thermal Sheet (Fall 2013)

Sort by Descending
  • From snowlush at 8/29/12 9:29 AM
    • does this bag feature a zipper that opens all the way to the fold to be used as a flat comforter?
    • The Zipper on the U.L. Sprial Down Hugger Thermal Sheet does goes down to the foot box, but does not go across to the fold; therefore, when unfolding, it won't be able to be used as a flat comforter.
    • Do you find this question helpful?  Yes   No
  • From m at 10/11/13 7:01 PM
    • What are the dimensions of this when it is packed down?
    • The packed size is 4.8" x 9.1".
      Thank you.
    • Do you find this question helpful?  Yes   No
  • From C at 1/21/14 10:03 AM
    • Does this sleepingbag have a dual zipper, like to create a vent near the foot box?
    • Hi C,

      thank you for your inquiry.
      The U.L. Spiral Down Hugger Thermal Sheet has only one zipper which can turn the bag into a quilt.
    • Do you find this question helpful?  Yes   No
  • From HQ at 3/25/14 9:06 PM
    • I'm just shy of 6 foot will I be too tall for this bag? It says up to 5' 10" but someone who's 5' 11" says they love it?!?!
    • Hey HQ,

      Thank you for your question.

      It looks like that product comes in a single 6' length, so you should be fine being just under 6' tall. Also, because it is a hoodless bag, it may be OK to be slightly over the height specifications.

      Let me know if you have any further questions or concerns.

      Best regards,
    • Do you find this question helpful?  Yes   No

Ask Your Own Question

Back to the product page

MontBell - U.L. Spiral Down Hugger Thermal Sheet (Fall 2013)

Quick Overview

Thermal sleeping bag
U.L. Spiral Down Hugger Thermal Sheet (Fall 2013)
Click to zoom in.
MontBell's lightest sleeping bag option, this climbers bag functions very well as a part of an ultralight sleep system when the UL down garments are integrated or cached in your pack in case of an emergency bivouac.
Manufacturer MontBell
Weight 13.8 oz.
Gender Men's & Unisex
Color Gunmetal
Mfg Sku/Part Number 2321806
Temp Rating º F 50º F
Temp Rating º C 10° C
Bag Style Rectangular
Seasonal Usage Summer
Insulation 800 Fill Down
Bag Length One Size
Diameter at Chest 56.7-68 in.
Diameter at Hips 45.7-54.9 in.
Waterproof No
Other Features Spiral Strethc System (PAT. Pending)
Drawstring neck adjustment
Full length zipper that turns the corner to offer a quilt option
Auto lock zipper
Tapered stuff sack
Product Reviews
Product Reviews
Questions and Answers


Backcountry Gear gets it: camping and hiking gear should help get you out into nature while not weighing you down with what it takes to get there. Your outdoor adventure shouldn't be hindered by heavy kitchenware, overwrought backpacks, or complicated camping tents. Get equipped with the right gear, but not too much. It's about efficiency and versatility, minimum weight for maximum benefit. Backcountry Gear, where minimalism meets productivity.

Backcountry Gear knows lightweight backpacking is all about keeping things compact and sensible. Hiking gear should be sturdy, reliable, and lightweight. Camping tents should be constructed of lightweight, durable materials, and be easy to assemble. Kitchen kits should be featherlight and easy to clean. Trekking poles should keep you balanced. Accessories like medical kits should be comprehensive and intuitive. We understand, and we understand not every hiker is the same.

Our inventory has a backpack for every pursuit. We have ultralight daypacks, hydration packs, packs for kids, duffles, and child carriers. No one gets left out. We have dog packs, lumbar packs, dry bags, travel packs and luggage, courier bags, shoulder bags, and external frame backpacks. They’re all engineered by the best in their fields with features that make getting to what you need rapid and simple.

Backcountry Gear has reliable ultralight stoves and titanium cookware to make cooking a cinch and camping a treat. Canister stoves or liquid fuel stoves, we have one right for you. Boil water quickly with Jetboil's Sol and MSR's Reactor, or go ultralight with MSR's Micro Rocket and Primus' Express Stove. Keep weight down with ultralight titanium pots, pans, and utensils from Snow Peak and Evernew and keep going.


For multi-day hikes, Backcountry Gear has go-to water treatment options for every water source. Pump and be sure with MSR's Hyperflow Microfilter or Katadyn's Hiker Pro Microfilter. Or avoid chemicals and pumps altogether with gravity filtration systems from Platypus or UV sterilizers from Steripen.


Headquartered in Eugene, Oregon, Backcountry Gear has the best camping and hiking gear from the global industry leaders Osprey, Western Mountaineering, and Sierra Designs. We stock the best in sleeping bags, lightweight tents, and ultralight backpacks, too. When you plan for the outdoors, plan on, your first stop for outdoor adventure. Every step of the way.