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Q:

I'm looking for the lightest breatheable bivy sack out there, any suggestions?

I'm looking for the lightest breatheable bivy sack out there, any suggestions? Gabe Lander, WY

The Hubba     Photo: courtesy, MSR

The Hubba

A:I’ve always hated bivy bags as anything but an emergency shelter, or for use on a climb when weight and space for a tent is at an absolute premium. I hate them even more now that tents are so light, weighing maybe a pound more than a bivy bag.

Compare, if you will, Outdoor Research’s really very fine and good Alpine Bivy ($219), with MSR’s one-person Hubba ($250). The Alpine Bivy weighs two pounds. The Hubba weighs...three. And you can sit up in the Hubba, something you really can’t do in the Alpine Bivy even with its hoop-over-the-head area. There’s no contest, in my view.

True, you can find lighter bivy bags. Integral Designs’s Micro Bivy ($210), made with eVent, comes in at 18 ounces, which is pretty good. But I still wouldn’t trade it for the comfort of a lightweight tent, except in the gravest of conditions. And then of course you can compare it to Mountain Hardwear’s Sprite 1 ($170), which can be trimmed to two pounds six ounces. Tents win.

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