The base layer that covers what hoodies don't. Standard crew necks leave a gap. Hoodies add bulk. You need something that seals your neck without extra fabric bunching under your outer layers. The 1/4 Zip Mock Neck solves this with a higher collar that protects your neck and gives you ventilation control when temps or effort levels change. Built with DUAL SURFACE™ Precision Blended Wool in a slightly more robust blend - the inner surface actively wicks moisture while the outer regulates temperature. You get base layer performance with midweight durability. What makes this work: Mock neck design seals warmth without hood bulk 1/4 zip for rapid ventilation when you're generating heat DUAL SURFACE™ construction manages moisture and temperature Feather-light feel that disappears under your kit Natural odor resistance through extended wear Athletic fit moves with you without restriction Durable enough for season after season of use Relaxed fit layers cleanly under shells and jackets Available in Phase.SC™ concealment patterns (Blowdown and Harvest) for hunters who need effective camouflage without sacrificing technical performance.Year-round essential. Cool mornings as your outer layer. Cold days as your base under insulation. Pairs with the Ultralight Tech Tank for a complete layering system. Fit: Athletic weather activity features DUAL SURFACE™ Precision Blended Wool Phase.SC™ Concealment Technology Fabric Weight: 157 g/m2 Garment Weight: Men's L = 168 g (0 lb. 5 oz.) Fabric Made in USA | Garments sewn in Pagosa Springs, USA