*Montbell does not recommend users referencing the extreme rating
for general use
UL Super Spiral Down Hugger #1
Super Spiral Stretch System
2-way auto locking full zipper
Zip together design
Comfortable full alpine cut
Multi-Tube construction with Flow Gate
Dual insulated zipper draft tubes
Neck Baffle: a shoulder collar minimizes air circulation through
the top of the bag
Heat saving Tunnel Hood
Images below are of the older 2011 version. The 2012 version has a slightly
larger fill weight and over-all weight and now has EN Temp ratings. The bottom
of the 2012 version is now black as well. All other general features including
user height, girths, stuffed size and materials are the same in 2011 and
2012 versions.
UL Super Spiral Down Hugger #1 with zipper fully
opened. Down-filled neck baffle can be see near hood.
UL Super Spiral Down Hugger #1 regular with 5" 11" model.
The bag features the Spiral Stretch System which by integrating a woven
fabric “cut on the bias” and orienting the fabric’s warp
and weft threads at 45 degrees to major seam lines the sleeping bag becomes
more fluid or elastic in nature, resulting in a flexible bag.
Close-up view of the down-filled neck baffle with
drawstring. Velcro tab on the left of the neck baffle closes to velcro
on top part of neck baffle when bag is zipped up.
The hood features a draw cord for face hole adjustment.
Green arrows above show the width of the upper
and lower draft tubes which are also snag proof.
Two-way zipper can be opened from the bottom to
provide ventilation. Auto Locking Zipper has been integrated to limit zipper “slip” during
the night.
The outside of the foot box features two nylon
loops for hanging the bag to allow to air out or for storage.
Regular sized UL Super Spiral Down Hugger #1 in
included stuff sack which measures 7.1" x 14". Pictured with a gallon jug
filled to 2.0" which weighs the same as the bag in it's stuff sack
Super Spiral-Stretch System
MontBell has adapted a classic tailor's trick by integrating a woven
fabric "cut on the bias". By orienting the fabric's warp and weft threads
at 45 degrees to most major seam lines the sleeping bag becomes more
fluid or elastic in nature. Additionally, coiled or crimped fibers
are used in the fabric weave to capitalize on their inherent stretch
properties. To create an even more comfortable system MontBell utilizes
an elastic stitch technique to create small "gathers" in the quilting.
By combining this stretchy fabric, strategic seam orientation, and
the elasticized gathers MontBell offers unrivaled fit and comfort.
These innovations allow the sleeping bag to stretch with you as you
change positions throughout the night, drawing the insulation closer
to your body and eliminating drafty dead spaces. Keep body heat inside
your sleeping bag, where it belongs.
