2009 Trek White Men's Short Sleeve Cycling Jersey Outdoor Sportswear,perfect Perspiration Breathable Mountain Clothing Bike Top COOLMAX: Quick-Dry function and make you feel more comfortable Lightweight material with moisture wicking technology Full zipper maximizes ventilation If relatively Tall and Strong(megeoma), advise to Choose a large than the normal size. 100% Polyester mesh? Wicking, highly breathable