Ultralight Sleeping Bag
Western Mountaineering Summerlite
$410, 1 lb. 3 oz. (regular)
Sizes: short, regular, and long ($420)
The lightest sleeping bags for summer camping—meaning for temperatures from the 50s Fahrenheit to around freezing—rarely include features like a hood, a draft tube, and a two-way, full-length zipper. The Summerlite has all of those while weighing in at barely north of a pound and remaining true to its 32-degree rating. On a weeklong, late-March trip in southern Utah, I slept in it for nights of car camping and backpacking in the Dirty Devil River canyon, when the low dipped into the high 20s, and found it warm, spacious enough, and supremely packable.