Drying out your CamelBak Reservoir after each cleaning is an easy way to maintain it between uses. Designed specifically for CamelBak systems, The Reservoir Dryer features a collapsible design that allows for easy insertion and removal without damaging the filler port. Out of the package, The Reservoir Dryer immediately fits all 100 oz. capacity reservoirs. If you own a smaller reservoir, you can quickly trim tabs off the dryer for a customized fit. The Reservoir Dryer can be customized to fit 90 oz. (2.7 l.), 70 oz. (2 l.), 50 oz. (1.5 l.), 45 oz. (1.3 l.) and 40 oz. (1.2 l.) CamelBak systems.