The brand new Crux reservoir delivers 20% more water per sip. Fit into any hiking backpack, with an ergonomic handle for easier refilling of the bladder, and an on/off lever that makes it easy to prevent leaks. Hydroguard technology inhibits the growth of bacteria in the reservoir and tube 100% free of BPA, BPS and BPF Size: 1.5L Care Instructions Use hot water and 2 tablespoons of baking soda or bleach. Mix the solution inside your reservoir and hold it up above your head while you pinch the bite valve, allowing the bleached water to run through the tube. You can also use CamelBak Cleaning Tabs. Let the reservoir and cleaning solution sit for about 30 minutes. Wash the reservoir with hot water and mild soap. Completely rinse away any bleach or cleaning solution before using it again. Or use CamelBak brushes from our Cleaning Kit to scrub your reservoir and tube. Brushes are the best way to ensure you are scrubbing all of the areas of the reservoir clean. Air Dry completely for mould prevention.