OGIO ENDURANCE Radius 1/4-Zip. OE550. STAY-COOL WICKINGLAYERABLE WARMTHSTRETCHFLATLOCK SEAMS FOR COMFORTREFLECTIVE DETAILS, 91/9 poly/spandex jersey with stay-cool wicking technology, Lightly brushed interior, Reflective OGIO Endurance heat transfer label for tag-free comfort, Zip-through cadet collar with molded cord pull, Reflective O heat transfer at back neck, Raglan sleeves with shaped cuffs, Drop tail hem with reflective stacked O heat transfers at lower back panels, Reflective O Endurance heat transfer at front left hem