What Our Gearhead® Experts Are Saying:"This is my go-to for high-output activities. It’s insanely lightweight, wicks moisture better than anything else I own, and the merino blend keeps odor under control even after long days on the trail. Whether I’m running, hiking, or layering for cooler temps, this shirt is a game-changer."For those of us who demand comfort and performance in one lightweight layer, the Featherlight Short Sleeve is a game-changer. Designed with icebreaker’s Cool-Lite™ fabric, this merino-TENCEL™ blend wicks moisture, dries quickly, and regulates temperature so we stay cool during high-energy pursuits. The slim fit makes layering effortless, while offset shoulder seams prevent pack rub on long hikes or runs. Naturally breathable and odor-resistant, it’s a go-to for everything from mountain trails to multi-day travel. Whether we’re pushing the pace or taking it slow, this ultra-light baselayer keeps us feeling fresh.