If there's one thing CamelBak know best, It's water. Their athletes, customers and colleagues told them they wanted a reservoir that delivered more water per sip, with a foolproof design that made it easy to fill up and hit the trail. The brand new CamelBak Crux 3L Reservoir delivers 20% more water per sip, with an ergonomic handle for easier refilling, and an on/off lever that makes it easy to prevent leaks. The Crux was put through exhaustive stress tests to make sure that it won't fail you on the trail. 100% free of BPA, BPS and BPF.