OGIO ENDURANCE Force Long Sleeve Tee OE340STAY-COOL WICKINGSTRETCHFLATLOCK SEAMS FOR COMFORTREFLECTIVE DETAILS, 5.2-ounce, 88/12 poly/spandex with stay-cool wicking technology, OGIO heat transfer label for tag-free comfort, Elastic locker loop on center back neck, Black reflective O Endurance heat transfer bar on back right shoulder, Thumbholes for warmth, Black reflective O heat transfer on front left hem