A high tech short sleeved short zipped summer cycling jersey with the same fit fabric and technology worn by the pros in the uci pro tour series but for the smaller aspiring riders total vapour exchange tvx fabric a 100 polyester fabric made up of two different yarns each with its own characteristics to move moisture efficiently away from your skin a loose spun yarn on the inside of the fabric soaks up moisture quickly and moves it to the outside surface a second tighter spun yarn