The Revolution Jersey SS is a mountain bike jersey built from KLIM&';s extensive off-road gear experience - a premium short-sleeve cooling jersey with comfortable, breathable mesh fabric construction for sweating it out on the acoustic bike or e-bike. An internal microfiber glasses wipe is included in the bottom hem panel, and the underarm gussets add comfort and prevent chafing. Main body lightweight mesh fabric Entire jersey is highly breathable Micro glass bead integrated right shoulder material 3M(TM) Scotchlite(TM) Carbon Black Reflective Material on left shoulder Seamless underarm design for comfort & mobility Drop tail Internal microfiber glasses wipe on bottom hem panel