Sierra Designs Nitro UL 20 Sleeping Bag Review

Sierra Designs Nitro UL 20 Sleeping Bag Review

Sierra Designs just launched their new Nitro UL 20 Sleeping Bag (available in 0°F, 20°F, 35°F, Women's 0°F, and Women's 20°F models) and we were fortunate enough to get our hands on a pre-launch model to test it out. We've been using the Nitro UL 20 for a few weeks now and we think it's a solid offering in the sleeping bag world.

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