Tracksmith Harrier Navy Blue Merino Wool Blend Athletic Running Tee Long Sleeve Shirt Size Small Pit to Pit: 18.5 inches Length: 27 inches Tracksmith Harrier Long Sleeve Running Tee. Heathered navy running tee in a merino wool and nylon blend made to keep you warm even when wet with sweat and be impervious to odor. Preowned, Good Condition