Spending time outside and in nature is made easier with the Royal Robbins collection of men's outdoor shirts. Each piece is created with the performance of a hiking shirt without sacrificing the comfort of a casual shirt. Smart features like HeiQ Smart Temp heat-activated thermoregulation technology works to keep you cool on the trail while thoughtful design details like functional pockets, zippered vents and more provide helpful support. If bugs are a consideration, explore our Bug Barrier collection for safe, insect-repellent men's clothing that'll keep pesky bugs away. Eco-conscious materials like sustainably harvested TENCEL™ Modal and recycled polyester provide added breathability during any outdoor activity; these fabrics are durable and lightweight, helping to wick away moisture from the skin. Many of our men's shirts also provide UPF sun protection as well for those longer days on the trail. Getting outside gets easier with lightweight, durable and packable men's shirts from Royal Robbins.