Topeak tri cage carbon bottle cagethe topeak tri cage carbon bottle cage is designed for saddle mounting a water bottle. It is constructed from carbon fibre, reinforced engineering grade polymer, which ensures strength, weight and as it features an 'easy access' forward release design, it helps prevent accidental drops when reaching for your water bottle. It features an integrated mount for the topeak ninja t road tool, ninja co2 inflator or the ninja pouch road spare tube carrier this bottle cage makes carrying additional essentials easier. Features material carbon fibre, reinforced engineering grade plastic recommended bottle outer diameter 72 74mm dimensions 15 x 8.2 x 7.8cm mount topeak tri backup hydration mounts or other rear hydration mounting systems compatibility ninja tc road, ninja co2 ninja pouch road weight 45gbuy topeak accessories from chain reaction cycles, the world's largest online bike store.