Please see our upload size chart reference,and according it choose the correct size,then send the email tell me your size information when you order,thank you * cycling jersey is made of 100% polyester keep you comfortable while riding in hot whether. with quick dry moisture and breathable function. * These cycling wear with high tech fabric breaths to keep you dryer by wicking sweat away from your ski * COOLMAX: Quick-Dry Function and Make you Feel More Comfortable * technic: all the bikes wear is full dry sublimation printing or computer printing.