Designed for demanding triathletes, this rear-mounted hydration system allows you to carry two bottles or one bottle and a tool keg. The Tri Bottle includes a universal mounting bracket, 2 bottle cages, the Pulse Z2 and Z2i, as well as the included screws for installation. The specific design of the Pulse Z2 and Z2i bottle cages allows for quick and easy access to the bottles. These bottle cages are made in France from reinforced fiberglass material and hold the bottles firmly. The Pulse Z2i comes with 2 CO2 cartridge holders. Universal saddle rail mounting. Includes 2 holders for small CO2 pumps (like the EZ Big Shot) and a cartridge (16 or 25 g). Reinforced fiberglass material. Optimal design for easy bottle removal and insertion. Zefal Item Number: 730335 EAN code: 3420586600628 Retail packaging: Yes