Supercharged with 37.5® Technology, the upgraded version of our best-selling Merino tee is lighter and better regulates temperature.

Merino, Maximized
We launched our Harrier tops in 2014 and they quickly became a year-round staple for runners. Even so, after a decade of wear, we decided it was time for an upgrade. Touting the classic comfort of your everyday, basic tee but with top-notch materials and state-of-the-art technology, the natural properties of the Merino alone make them odor-resistant, run after run, without washing. We supercharged the Harrier Tee with 37.5® Technology - an innovative treatment that keeps you cool by discarding heat while it's still in vapor form. If it sounds a bit like magic, it is. We've struck natural performance gold.

Featuring a high crew neckline and raglan sleeves
Crafted for year-round use with top-notch performance materials
Constructed with upgraded seams that prioritize durability
Made in a natural-fiber blend and powered by 37.5® Technology

Body Fabric: 48% Merino Wool / 39% 37.5® Nylon / 13% Nylon
Odor-resistant, even if you skip laundry day
37.5® Technology for optimal temperature regulation
Machine wash cold on delicate cycle with like colors. Do not bleach. Do not use softeners. Lay flat to dry.