The brand new Crux delivers 20% more water per sip, with an ergonomic handle for easier refilling of the bladder, and an on/off lever that makes it easy to prevent leaks\n\n- Offers 20% more water per sip\n- Leak-proof cap is easier to open and close\n- On/off lever lets you seal your drinking tube shut with one hand\n- Hydroguard™ technology inhibits the growth of bacteria in the reservoir and tube\n- Big bite valve self-seals after each drink, eliminating annoying drips