Zefal Tri Bottle Cage SetIdeal for triathletes, giving the ability to add two water bottle cages behind their saddle. Great solution for triathlons or long training rides where extra hydration is needed. Made in france Made of carbon fibre composite material this set ensures your water bottles have great hold. Includes a universal saddle rail mount, two bottle cages (z2 and z2i model), in addition to the mounting hardware. Universal saddle rail mount quick and easy