ZoneKnit Merino Long Sleeve Half Zip Top – Women's

Built for high-output trail and mountain days where temperature swings are constant, the ZoneKnit is our top pick for women who run or hike hard in cooler conditions. Strategic zones of pure merino wool regulate temperature and resist odor without synthetic help, so you stay comfortable through long efforts. The half-zip gives you quick ventilation control when the climb gets steep.

• 100% merino wool construction manages moisture and odor naturally — no synthetic blends, no funk after big days
• ZoneKnit construction places fabric strategically across the body to balance warmth and breathability where you need it most
• Slim fit and hip-length cut layers cleanly under a shell or vest without bunching or riding up
• Half-zip collar gives you on-the-fly ventilation when effort or temperature spikes
• Available in Black and Grape/Cosmic in sizes S, M, and L — works as a standalone layer or active base layer in colder temps