CamelBak Crux Hydration Reservoir

The Crux Lumbar Reservoir is designed specifically for lumbar-style packs, which sit lower on your back than traditional vertical reservoirs. While the QuickLink system makes it easy to integrate with many CamelBak packs, you should verify that your specific pack is compatible with a lumbar-shaped reservoir to ensure a proper fit.

Hydroguard is an antimicrobial technology embedded directly into the reservoir and tube material. It inhibits the growth of bacteria on the surface, which helps keep your water tasting fresh and prevents the plastic from developing that stale, funky odor over time.

The Big Bite Valve is self-sealing, meaning it automatically shuts off after every sip. For added security during transport or storage, the reservoir also features a dedicated on/off valve that completely prevents water from flowing through the tube.

Yes, the reservoir is constructed from BPA, BPS, and BPF-free plastic. These materials are rigorously tested to ensure they are safe for drinking and do not leach chemicals into your water.

Because the opening is wide and the cap is easy to remove, you can rinse the interior with warm water and mild soap. For a deeper clean, we recommend using a dedicated reservoir cleaning brush kit to scrub the interior and the drinking tube, then hanging it upside down to air dry completely.

The internal baffle helps the reservoir maintain a flatter, lower-profile shape even when it is full. This prevents the water from sloshing around or bulging out, which keeps the weight centered and stable against your lower back while you move.