If we had a Most Comfy award, this recycled-synthetic Climashield bag would win. Credit the recycled Cocona linerwhich wicks moisture and feels more like sheets than slick nylonand the cozily lined foot area. The trade-offs: It's not as compressible as other synthetics, and it's a tad heavy. 5°, 3.4 lbs; sierradesigns.com
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