M Greyboy Long Sleeve

The Tracksmith Greyboy Long Sleeve is a modern classic built from the brand’s signature Varsity Cotton — a durable, breathable knit designed to feel better with every wash and mile. Inspired by the off-duty training tops worn by New England harriers, this long sleeve delivers that unmistakable Tracksmith blend of nostalgia, comfort, and performance. It’s substantial without feeling heavy, soft without losing structure, and timeless enough to wear anywhere from shakeout runs to Sunday errands.

If you know the Greyboy, you know: this is the piece that becomes a wardrobe staple the moment you put it on.

Key Features

• Varsity Cotton construction — soft, durable, breathable

• Classic Tracksmith aesthetic with heritage-inspired graphics

• Raglan sleeves for natural movement and all-day comfort

• Versatile weight — perfect for warmups, cooldowns, and everyday wear

• Built to last — fabric gets better, not worse, over time

• Timeless silhouette with an elevated athletic feel