A great year-round bag or a three-season choice for cold sleepers, this down bag delivers solid Marmot quality in a light, durable design

Stay warm on cold-weather climbing, backpacking or mountaineering trips with this feature-packed Marmot Couloir 800-fill goose down wide, Long/Regular mummy bag.

The North Face Snowshoe 0-Degree Sleeping Bag represents an optimal combination of warmth and weight for all-season backpacking and mountaineering. Using overlapping shingle construction, this zero-degree sleeping bag's Climashield Prism synthetic insulation stays evenly distributed, so you don't end up with cold spots in your bag.

Backpacker April '08 proclaims the Marmot Lithium bag is "sleep-anywhere evidence that luxury and lightweight can go hand in hand."

The REI Halo +10 goose down bag offers the perfect of balance low weight, high-quality materials and top performance—great for backpacking in cool weather.