The wicking fabric used to make all of the jerseys help keep your body temperature regulated.  The ventilation material in the jersey helps your apparel breathe easier to cool your body.  The cut of the jersey is made to fit you “on the bike”, longer in the back and shorter in the front.  We have jerseys with full or half zips in the front along with or without pockets on the back of the jersey to store items (such as food).  When choosing a jersey there are subtle differences in the attributes of a Road, Mountain, Triathlon, and Casual Jersey choose the style that best fits your needs.  A more Road specific jersey may be Form fitting, aerodynamic, and lightweight, where a Mountain jersey will likely be made of more durable material, the Triathlon gear must work well while swimming and running, and on the bike, and finally a casual jersey will fit and feel more like your regular clothes.