Gear Review: Sea to Summit Talus Ts I Sleeping Bag

An ultralight bag that breathes

[ultralight]

This featherweight was a hit with warm and cold sleepers alike. According to one tester who “sweats like I’m in a hot yoga class when I sleep,” the Talus ably handled his excessive moisture generation, even in the perennially wet conditions of the Pacific Northwest. Credit the combination of water-resistant 750-fill Ultra-Dry Down (STS’s name for DownTek) and the 30-denier nylon shell fabric, which is highly breathable. As body moisture passes through the lining, the water-resistant coating on the down facilitates the vapor’s flow out through the shell instead of trapping it in the plumes, as standard feathers would. And the 750-fill duck down (which is less expensive than goose down) also managed to keep a cold sleeper happy right down to the bag’s 23°F rating.

“I can finally stay warm in subfreezing conditions without resorting to a 0°F bag!” he says. Our broad-shouldered testers appreciated the relaxed mummy cut, but some felt the hood was too voluminous and hard to keep warm. The whole package compresses down to honeydew melon-size in the included compression stuffsack. $349; 1 lb. 13 oz.; short, reg., and long; seatosummit.com