Topeak tri cage bottle cage with saddle carrier mounting in mind, the tri cage bottle cage employs an easy access forward release design, geared to stop you dropping your bottle when reaching back for some mid ride refreshment. Built from an engineering grade polymer, the tri cage not only holds your liquids, but can also support additional peripherals including the ninja t road tool case, the ninja pouch road spare tube carrier or the ninja co2 inflator. Multi purpose with two tyre levers also included, the tri cage makes itself an essential accessory for those who like to keep thmselves hydrated and their bike in top condition while on the go.features  material engineering grade plastic rubber  mount topeak tri backup hydration mounts or other rear hydration mounting systems  cage outer diameter fits standard water bottle up to 750cc, recommended bottle diameter 72mm 74mm  compatibility ninja tc road, ninja co2, ninja pouch road  size 14.7 x 9 x 8.2 cm  weight  74gbuy topeak accessories from chain reaction cycles, the world's largest online bike store.