Thule

Rail 18L Hydration Pack

What Our Gearhead® Experts Are Saying:

"I ride with the Rail 18L because it combines everything I need—hydration, back protection, and battery carry—in a super stable platform. The fit is snug even on tech descents, and having my multitool and phone within easy reach in the lumbar pockets is a small feature that makes a big difference."

Built for aggressive mountain bikers, enduro racers, and e-MTB explorers, the Thule Rail 18L Hydration Pack combines performance-focused engineering with trail-ready utility. It includes a 2.5L HydraPak reservoir that integrates with Thule’s ReTrakt magnetic hose return for effortless hydration. Designed with downhill stability in mind, it features a snug, bounce-free fit that stays secure even through berms and drops.

A removable CE Level 1 Koroyd back protector provides lightweight, breathable impact protection without sacrificing mobility. A stabilized sleeve inside the pack carries an extra e-bike battery—ideal for longer missions or multi-stage rides. Multiple internal storage pockets organize tools, spares, and essentials, while dual front pockets and back jersey-style stash zones keep key items within arm’s reach.

Constructed with durable, water-resistant nylon, the Rail 18L includes a rain cover, reflective accents, and light attachment loop for enhanced visibility and protection in all conditions. It’s a hydration pack built to match the pace and precision of modern trail bikes—and the riders who push them.