Jacket Review: MontBell Thermawrap

This is one of the lightest three-season sleep systems we've seen

Eight ounces of bliss, raves Peter after staying warm on sub-20°F nights in this synthetic-fill jacket. It may forgo pockets and wind resistance, but the elastic hem and cuffs seal in heat, the shell repels light moisture, and the microfleece collar is baby soft. Match the Thermawrap with Feathered Friends' Rock Wren sleeping bag ($235; 1 lb. 11 oz.; www.featheredfriends.com), which has arm holes and a drawcord footbox, to create one of the lightest three-season sleep systems we've seen.

Price: $129

Sizes: S-XL

Weight: 8 oz. (M)

Contact: (303) 449-5331; www.montbell.com