Fit & features
The Viul compresses to bocce-ball size thanks to its streamlined design. There’s no hood, the 3-inch collar reaches to just below the chin (use a Buff in windy conditions), and the cuffs and hem use non-adjustable elastic. The two mesh-lined hand pockets double as core vents, and the fit is close—best when worn over just a lightweight baselayer.
Each side panel features 4-inch-long, always-open vents that dump heat and moisture, even when you’re wearing a pack. Throughout the chest and back, a hanging fishnet liner made of 100-percent merino wool wicks sweat to the outer shell. “The mesh kept me feeling cozy and dry, even after strenuous, 700-foot climbs,” says our Colorado tester.
The merino liner provides low-bulk warmth appropriate for 10°F forays on skis or snowshoes. And the windproof Pertex Classic Eco shell kept our tester from feeling chilled during skate skiing, running, and other hard-charging exploits: “It was exactly what I needed for temperature regulation above treeline,” she says. The tightly woven nylon repels dry snow and brief showers.