Men’s lightweight Lululemon running long sleeve

Worn once, but not liking the fit. Hang tag removed and can’t find a size dot on this top. It fits like a relaxed men’s medium for lululemon. Dark Grey/blue colour Reflective strips on back and arms Super lightweight with silverescent threading, so maybe part of their swiftly line? 1-2 pulls, no other signs of wear. Collar to hem 28 in Pit to pit 20 in