Extended trips in wet climates, big wall climbers, and NOLS and Outward Bound students can't beat the warm-when-wet performance of the Mountain Hardwear Ultralamina. It retains its loft and insulating properties even when you're soaking wet and offers several features that set it apart from the synthetic competition: a small hood opening and full neck baffle to seal in warm air. Unique laminated construction saves weight and increases warmth and weather resistance. Our testers have spent months inside the this bag in Patagonia. There's no other bag we'd rather have when everything else is damp and miserable.
The Mountain Hardwear Ultralamina 15 is our highest rated synthetic sleeping bag. It earns high marks because it's made with high quality materials and constructed in an efficient and innovative way. It is lighter and more comfortable than other synthetic sleeping bags.
For wet trips in warmer weather we prefer the Enlightened Equipment Prodigy because it's 12 ounces lighter and nearly as warm. Check out our full Backpacking Sleeping Bag Review to see how synthetic bags compare to their down counterparts tested. If saving weight is a top priority, consider a down backpacking sleeping bag and if you really need to go light, see the Ultralight Sleeping Bag Review.