Tried & New: MontBell U.L. Super Spiral Down Hugger 0
By Tyler Cohen September 11, 2013
A good cold-weather sleeping bag should compress to the size of a cantaloupe; it should be true to its temperature rating; easy to get in and out of and cinch well enough to keep cold out and warmth in. Beyond that, a sleeping bag is pretty simple. MontBell, however, would beg to differ.
I’ve been using MontBell’s zero degree-rated U.L. Super Spiral Down Hugger for the last three winters and it’s anything but a regular bag. Its complicated name (let’s just call it the U.L.) belies even more complex construction. Unlike those of a traditional bag, the baffles of the U.L. spiral around your body at a 45-degree angle. That, combined with elasticized fabric and stitching and some classic tailor’s technique, MontBell says, makes the entire bag stretchy. And it is—the U.L. moves with me when I sleep making it both more comfortable and warmer, I think, than a regular bag.
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