*Montbell does not recommend users referencing the extreme rating
for general use
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 inside 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 Spiral Down Hugger #1
Spiral Down Hugger #1 with zipper fully opened
and green line showing the width of the draft collar that runs the interior
perimeter of the bag. Blue arrow points to the draft collar tension cord.
A double draft tube prevents air from circulating through the zipper.
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.
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.
Regular sized Spiral Down Hugger #1 in included
stuff sack which measures 6.9" x 13". Pictured with a gallon
jug filled to 1.8" which weighs the same as the bag in it's stuff sack
UL Spiral Down Hugger #1
Spiral Stretch System (PAT.Pending)
Box Construction:
Eliminates cold spots resulting from sewn-through seams and
allows down to loft completely.
Tunnel Hood: a small face hole
to improve warmth around your head and face
Neck Adjuster:
a drawstring adjusts fit around neck
Neck Baffle: a shoulder
collar prevents air circulation through top of the bag
Draft
Tube: a double draft tube prevents air from circulating
through the zipper
Auto Locking Zipper: a locking mechanism
has been integrated to limit zipper “slip” during
the night.
Tapered Stuff Sack: A tapered opening and "bias cut" fabric
are utilized to facilitate easier packing.
