Fizik arione k3 tri saddle carbonthe fizik arione k3 tri saddle has the construction features and comfort to carry you to victory fiziks patented wing flex technology allows free thigh movement that not only provides comfort mile after mile it ensures efficient power transfer supportive and tri specificthe arione k3 tri model shares the same features as the standard arione model but with a wider more padded nose for those long periods on the tribars carbon braided rails keep the weigh