The Columbia Alpine is a men's short-sleeved shirt that makes an excellent companion for hikers on their travels. Made from a polyester fabric that captures and neutralizes odors with Omni-Wick technology, this shirt keeps the body cool even after days of hiking. What's more, it combines Omni-Freeze ZERO sweat-activated cooling, a moisture-wicking system for faster evaporation. This allows the athlete to sweat with the assurance of always staying dry. Finally, this shirt adds a touch of safety with the addition of reflective details. Lightweight knit: 100% polyester Sweat-activated cooling system Omni-Freeze Zero Omni-Wick captures and neutralizes odors for long-lasting freshness Comfortable stretch fabric Reflective details For summer activities and hiking