Super light and engineered for optimal moisture management, the Arc'teryx Boys's Eon SLW Crew Long Sleeve is ideal for aerobic or stop and go activities. This moisture-wicking base-layer features encapsulated silver-ions for durable and long-lasting odor control as well as naturally soft Merino wool that speeds dry-time and reduces layering bulk. Breathable and lightweight, the Arc'teryx Eon SLW Crew Long Sleeve for men is Built for performance.