Stabilize your seat pack carry more water ride farther designed for long-distance cycling, the rockbros multifunction saddle rail rear rack securely mounts to the saddle rails, providing strong support for large seat packs while adding dual bottle cage mounting points. It maximizes rear storage efficiency without occupying valuable frame space. Why you’ll love it prevents large seat packs from swaying on rough roads dual bottle cage mounts for extended hydration frees up frame mounting points ideal for bikepacking, touring, commuting, and endurance rides key features rock-solid seat pack support mounted directly to the saddle rails, the metal rear rack firmly stabilizes large seat packs, reducing side-to-side movement caused by pedaling or uneven terrain.The extended metal frame also provides additional anchoring points for straps, ensuring a more secure setup. Dual bottle cage mounts bottle cage mounting holes are built into both sides of the rack, allowing you to install up to two bottle cages.This smart design solves the problem of limited frame mounts and ensures sufficient hydration on long rides. One-piece high-strength aluminum construction made from high-strength aluminum alloy one-piece integrated design for durability vibration-resistant and deformation-resistant easily supports the weight of two full water bottles built to handle long-distance riding without compromising stability. Easy installation & wide compatibility installs using hex tools tools included s...