Double your hydration intake on a long bike ride by dual-wielding your water bottles. The all-new Aquarack Dual Bottle Cage by Profile Design can hold two water bottles. Maximize your efficiency with the mount born to perform. This two-bottle rear mount hydration system completely changes the game. Included with clamps that mount to standard round diameter bicycle seat posts, you can easily attach this hydration station to posts measuring 31.6mm or 27.2mm. The Profile Design Aquarack Dual Bottle Cage has a new reinforced design for ultimate durability while on the road or trail. And because it attaches to your seat post, it's high enough to avoid any mud or puddle splashes that intend to infiltrate the integrity of your water. Features: New reinforced design Includes 2 lightweight Profile Design Kages