Enjoy more water per sip from your high-performance hydration system with the CamelBak Crux Replacement Hydration Reservoir. Designed to keep your compatible CamelBak hydration system going strong, this replacement reservoir gives you up to 20% more water over previous designs on every sip you take. Quit worrying about unpleasant drips, thanks to the Crux's handy on/off lever on the drinking tube and self-sealing Big Bite valve. Trail tested design features an easy-to-open, leakproof cap that makes refills easy. BPA-, BPS-, and BPF-free reservoir combines durable construction with Hydroguard technology to resist bacteria growth in the reservoir and tube, giving you a fresh drink every time. High-performance replacement reservoir for compatible CamelBak hydration packs New design - up to 20% more water per sip Self-sealing Big Bite valve - no annoying drips Handy drinking tube on/off lever - eliminates drips Trail tested design Easy-to-open, leakproof cap - easy refills BPA-, BPS-, and BPF-free Hydroguard technology - resists bacteria growth