The Atom sits in the middle of the range of the three gilets here in terms of warmth, but is the lightest in weight. It uses a propriety insulation called Coreloft™, and is designed with fairly relaxed fit which aids in its role as a layering piece. There’s a one-way front zip with windguard, high collar, half lined and zipped handwarmer pockets and one internal pocket. It saves some weight and bulk by using Polartec power stretch fleece panels on the sides, saving the main insulation for front and back only. It packs down tiny. I found the Atom to be comfortable when static, and warm when moving with a heavy backpack – better with a daysack or on much colder days (in short supply during the test period). Overall, the Atom LT strikes a near perfect cold weather balance. Weight 220g.
VERDICT: Excellent balance of weight, warmth and bulk, and nicely designed.
BEST FOR: Colder weather trekking and mountaineering.
Review by David Lintern @