OGIO Radius 1/4-Zip. STAY-COOL WICKING LAYERABLE WARMTH STRETCH FLATLOCK SEAMS FOR COMFORT REFLECTIVE DETAILS 6.7-ounce, 91/9 poly/spandex jersey with stay-cool wicking technology Lightly brushed interior Reflective OGIO 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 heat transfer at front left hem