Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for chest and waist correspond to two different sizes, order the size indicated by your chest measurement for tops and your hip measurement for pants.
Our three different fits - slim, regular, and relaxed - ensure that when worn together, layers move and breathe like a single garment.
A snug, close-to-body fit for low bulk layering.
Neither snug nor loose - garments that are worn solo or over other layers.
Loose fitting lightweight layers.
free returns & exchanges
A lightweight dose of core warmth for active days up at the ski resort, out on the trail or just around town, the Atom Vest is inspired by the mountains but perfect for just about anywhere. The Atom Vest features our RealFLEECE® fabric, which uses nylon core fibers wrapped in merino and then brushed, providing more warmth with less weight. Zippered hand pockets and a welded zippered chest pocket store your ID, cash and other small essential items while you’re out on the go.