You don't have to spend big to stay warm in winter. This affordable synthetic has elastic stitching that compresses the bag's inner lining around your body–eliminating cold air pockets–without a mummy-tight fit. "It felt like mommy tucked me in," one tester said.
The Exceloft fill, which feels softer than most synthetic insulations, kept even our cold sleepers comfortable in bone-chilling Wales and on bitter winter nights in Canyonlands National Park. And campers noted that the bag seemed to warm up faster than a typical synthetic sack. The tradeoff: It's more than a pound heavier than a comparably rated down bag. It's also bulkier than down, but not by much; it packs to rugby-ball-size in the included compression sack. $185; 4 lbs. 6 oz.; 0°F