- Ultralight
- 50° Degree Rating
- Spiral Stretch System
- Extremely Compressible
- 800 Fill Power Down
The Montbell UL Spiral Down Hugger Thermal Sheet is an ultralight and warm summer sleeping bag. It can also be used as a liner bag to add warmth to your exsisting sleeping bag, or ultralight sleep system when Montbell UL apparel are integrated.
High quality 800 fill goose down, ultralight 12-denier Ballistic Airlight Nylon, Spiral Stretch™ System and elite 100-wash rated DWR are combined into this award winning bag.
With Montbell's patent pending Spiral Stretch™ System you get a closer fit which means one thing: a warmer more efficient bag. This system consists of elastic sewn into the baffles on the inside of the bag. This system allows the shell of the bag to keep its full shape while drawing the interior closer to you. The elastic baffles also allow the bag to stretch a little as you move and change positions.
The top opening adjusts to keep warm air in or out for increased comfort. Full length zipper allows flexibility for ventilation or open it all the way to use as a blanket.
Ballistic Airlight™ - 12-denier Ballistic Airlight™ nylon is astoundingly thin, weighing less than half of a 45-denier nylon of normal shells while offering similar strength. This strength comes from the manufacturing process where the nylon is repeatedly stretched to align the molecules, much like the tensilizing of steel, resulting in an extremely light weight, wind resistant, breathable and water resistant fabric.
Polkatex™ DWR - Elite best water repellant performance. Polkatex™ is so durable that even after 100 washings it still retains 90% of its original repellency. Unlike other water repellent treatments, Polkatex™ DWR will retain its ability to keep you dry wear after wear, and wash after wash. Cotton Storage bag included.
Shell: Ballistic Airlight Ripstop Nylon
Lining: Ballistic Airlight Ripstop Nylon
Insulation: 4.5 oz oz. 800 Fill Power Down
Construction: Spiral-Box & Sewn Thru
Stuffed Size: 4.8"x 9.1"
Fits up to 5' 10"
*The Montbell UL Spiral Down Hugger sleeping bags are offered in right zip only. Montbell doesn’t make this model in a left zip.
Regular fits up to 5' 10"
Thermal Chart for Montbell Sleeping Bags
Comfortable Temperature
The Comfortable Temperature range* shows the temperatures in which you can restfully and pleasantly sleep 8 hours or more wearing only a thin layer. Use these ranges to select the best sleeping bag for your needs. *These ranges were measured in laboratory tests - depending on your situation and sleeping preferences, you may be more comfortable in a warmer or colder bag.
Minimum Temperature
The minimum temperature range* shows the temperatures in which you can sleep in relative comfort for 6 to 8 hours. *These ranges were measured in laboratory tests - depending on your situation and sleeping preferences, you may be more comfortable in a warmer or colder bag.
