STAY-COOL WICKINGODOR CONTROLZONED VENTILATIONSTRETCHFLATLOCK SEAMS FOR COMFORTREFLECTIVE DETAILS,5.6-ounce, 88/12 poly/spandex jersey body,4.1-ounce, 92/8 poly/spandex mesh panels,Reflective taping at front and back raglan sleeves and zipper,Mesh at center back,Reflective O heat transfer at back neck,Reflective stacked O heat transfers at back and sleeves,OGIO heat transfer label for tag-free comfort,Modified raglan sleeves with thumbholes for warmth,Slight drop tail hem,Reflective O heat transfer at right hem