Tracksmith Men's Downeaster Half Zip

*Fall 2026 update: Earth Red and Gravel colorways feature a pocketless front

Considered for Sweat, Cut for Style. A versatile mid-layer made with Merino wool, a natural performance fiber that resists odor and regulates temperature. Technical doesn't need to look tacky, and our Downeaster Half Zip is proof. Crafted with Merino, this mid-layer is warm, breathable and odor-resistant, finished with an exceptionally cozy brushed back for the utmost comfort. The considered, casual silhouette can be styled beyond the sweat – wear it to warm up, wear it on a chilly long run, wear it out for a post-race beer. This is performance wear that's perfectly appropriate anywhere, any speed.

Product Highlights

• Head Downeast - In New England, “Downeast” is the rocky region stretching from coastal Maine to Canada, home to some of the most beautiful oceanside trails on the East Coast (and also some wildly unpredictable weather). Inspired by this grit, we’ve combined performance and practicality in the Downeaster Collection.
• Run in Wool - We’re firm believers that wool should be a staple of the runner’s wardrobe. Its unique fiber structure unlocks a host of performance benefits, from thermoregulation to odor-resistance. The Downeaster is officially Woolmark New Wool Certified, meeting their rigorous standards for new wool percentages and performance.
• Crafted for Comfort - The mid-layer is complete with a zipper guard to shield the skin, a double-layered stand collar to optimize warmth, and a ribbed bottom band and cuffs that help maintain the silhouette over time. In other words, we wanted it to be so comfortable, you’ll keep it on after the run.
• The Downeaster is Woolmark New Wool certified to contain 100% new wool.
• A long sleeve silhouette with a mock neck stand collar.
• Featuring a half zip with a zipper guard that shields the hardware from the skin.
• Large kangaroo pocket with an internal phone pocket.

Product Details

• Body Fabric: 100% Merino Wool.
• Other Fabric: 94% Merino Wool / 6% Spandex.
• The performance fiber naturally resists odor, wicks away moisture, and regulates temperature.
• A relaxed-fitting mid-layer that can be worn comfortably over a base layer.