Cyclone Hydro Reservoir: * Last Drop integral molded bottom attachment has been added to ensure that you can get out all the precious fluid you put in * Built-in basin at the bottom collects the remaining drops of your beverage * Quick connect hose * Equipped with a quick connect hose release which allows you to easily remove the hose for a thorough cleaning * Reservoir bite valve is uniquely molded for exceptional performance * Flexible TPE (Thermoplastic Elastomer) provides a comfortable bite that makes large sips easy * Internal reinforcing ribs insure its durability and bite longevity * Reservoir bite valve can be easily removed for cleaning with our secure screw-on attachment * Low profile cap packs easily into bags * Odorless and taste-free hose * Cap handle makes filling easy * Odorless and taste-free reservoir * Made from 100 percent BPA-free materials