evo.com | Arc'teryx Long Underwear Tops > The Arc'teryx Kyanite Baselayer Zip Neck Top delivers heavyweight warmth for cold lift rides and high-output winter activities. The brushed polyester interior traps heat against skin while the durable nylon face resists abrasion from boots and outer layers, creating a warm, durable layer that works equally well for skiing, running, or any other cold weather activity you can dream up. Articulated patterning and stretchy construction ensure unrestricted movement, and the zippered sleeve pocket keeps small items secure. Zippered Sleeve Pocket Polartec Power Stretch Pro Nylon / Polyester 1/4 Zip Mock Neck Fitted Arc'teryx's trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably under outer layers. Articulated Patterning | Women's Arc'teryx Kyanite Baselayer Zip Neck Top 2026 - X-Large Brown | Nylon/Polyester