The Rail 18L hydration pack is designed for MTB and enduro riding. It includes a 2.5L HydraPak reservoir with slide-top closure and a Koroyd Level 1 CE-certified removable back protector. The magnetic ReTrakt hose return system enables hands-free hydration. It has a dedicated e-bike battery sleeve fitting up to 410x100x100mm, internal tool pockets, dual front storage, and lower back jersey pockets. The air mesh back panel enhances ventilation on long climbs. It also features a rain cover and reflective details for storm and low-light conditions.