Gore bike wear alp x pro jerseymade from a very lightweight material mix this alp x pro jersey is designed for mtb marathons plenty of storage space makes room for extras and the firm hold pocket technology offers firm support and avoids sagging or swaying of the pockets on the trail for mtb marathon racers or fast trail riders who need just what is necessary and nothing more the gore bike wear alp x pro short sleeve jersey is an excellent choice the lightweight material and mesh ventilation