Mesh at center back. Modified raglan sleeves with thumbholes for warmth. Slight drop tail hem. Reflective taping at front and back raglan sleeves and zipper. Reflective O heat transfer at back neck. Reflective stacked O heat transfers at back and sleeves. OGIO Endurance heat transfer label for tag-free comfort. Reflective O Endurance heat transfer at right hem. Body: 88% Polyester/12% Spandex jersey; Panels: 92% Polyester/8% Spandex.