With the Marmot Trestles 30F Sleeping Bag you get a lot of bang for your buck. A very versatile synthetic bag, the SpiraFil High Loft Insulation will keep you warm even when wet and still compresses down to a small size. 30 degree bags are great for most of the year, they can keep you cozy in the transition months and, with the two full-length two-way zippers, can easily manage the warmer temperatures of the peak of summer. The two zippers also allow multiple Trestles to zip together for sharing of body heat. Marmot calls this "mating" two bags together. I was wondering how sleeping bags mated. Pretty hot.
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