The lightweight Carbon Ion fabric offers exceptional moisture wicking and airflow, but what's even more is it is now treated with coldblackR that reflects the sun to reduce the surface temperature of the fabric. In other words, the black version of this jersey will stay as cool as the white. The coldblackR treatment also offers extreme UV protection. With preshaped shoulder and aero lazer band sleeves, the Performance Carbon Jersey performs aerodynamically and offers comfort when in the aero position. Enviro pocket: Stores empty gel pouches separately to eliminate litteringElastic at hem: Secures fit. Front and back reflective accents: Enhances visibility. Racer Fit men. UPFSPF 35. coldblack finish.