Why upgrade to CamelBak Crux when an old one will last forever? Because they never stop innovating. CamelBak's Crux reservoir delivers 20% more water with every sip in a pack loaded with the latest in hydration technology. So you can do even more of what you love. Big bite value is easy, bite and sip the self-sealing value eliminates those annoying drips. The Quick Ling system allows for easy removal of the reservoir from your pack by disconnecting the drink tube with an auto shut-off to prevent leakage. The reservoir baffle creates a low-profile fit for easy pack loading. FeaturesBig Bite value self-seals after each drink, eliminating dripsQuick Ling system for easy removal of reservoir from the tubeLeak-proof on/off lever Hydroguard anti-microbial technology inhibits the growth of bacteria BPA/BPS/BPF free