Fizik arione r3 open saddledesigned to give you comfortable support when tackling road and mountain bike terrain, the airone r3 open saddle benefits from a flat profile, ideal for holding your riding position on long journeys. This saddle features a central cut out, to help reduce pressure on your sit bones, for a comfortable ride you can count on. Spine concept evothis saddle is categorised as a snake type within fizik's spine concept system, which means it's ideal for riders with lots of spine flexibility and those who rotate their pelvises very little or not at all when pedalling.advanced constructionthe arione r3 open saddle has kium rails that are lightweight and strong and its nylon base is reinforced with carbon fibre. This construction gives you a platform that provides outstanding durability and pedalling efficiency. Finishing off this saddle is fizik's comfort core foam and a tough microtex cover.features use road, mountain bikecover microtex shell carbon reinforced nylon rail 7mm kium padding comfort core foam open central cutaway integrated clip system compatibledimensions regular 300x130mm large 300x142mm weight regular 230g large 240gbuy fizik components from chain reaction cycles, the world's largest online bike store.