The Crux™ hydration system from Camelback is capable of delivering 20% more fluid per sip than the PureFlow version. This comes down to a larger diameter drinking tube and the Crux On/Off Valve. Camelbak understands that gear gets used and abused at times, and accidents happen, so they offer several of the hydration system pieces as modular units. This is the Crux Replacement Tube, made of Camelbak's polypropylene and measuring 99cm long. It can be easily cut to desired length.

Camelbak takes user safety and health seriously. The Crux Replacement Tube features Camelbak's HydroGuard™ technology, which inhibits the growth of bacteria, and the tube is 100% free of BPA, BPS and BPF. This is for the tube only, but you can purchase a Big Bite Valve and the Crux On/Off Valve separately.