Tracksmith launched the Harrier tops in 2014 and they quickly became a year-round staple for runners. Even so, after a decade of wear, it was 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 odour-resistant, run after run, without washing. They supercharged the Harrier Tee with 37.5® Technology - an innovative treatment that keeps you cool by discarding heat while it's still in vapour form. If it sounds a bit like magic, it is. They've struck natural performance gold.

Product Details:

• 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