Hydration bladder with high-flow bite valves and large, easy-fill screw top opening makes it easy for cleaning and faster set-up. Locking bite valve allows for easy access to water and doesn't drip when not in use Removable flexible hose, easy to unscrew from bladder to clean Large, wide-mouth screw top opening for easy fill and cleaning BPA FREE Compatible with all Quickstart (1.0 & 2.0 series) & Crossover Packs TO CLEAN BLADDER Remove the top slider and empty remaining liquid Reach hand inside reservoir, grab the bottom, and then pull to reverse; turning the reservoir inside out Wash bladder with warm water and soap Run warm soapy water through the hose Rinse both until soapy residue is gone Dry with top open Pro Tip: Use balled up paper towels in your bladder to help it dry OTHER CLEANING TIPS STAINSBladder staining is generally caused by food coloring used in liquids. This staining does not affect the functionality of the bladder, yet can be difficult to remove. We recommend using a chlorine free, non-toxic, and biodegradable tablet to combat stains and odors. PLASTIC TASTEOccasionally users may notice a plastic taste. To reduce, squeeze lemon juice into the reservoir, fill with water, and place in the freezer. After frozen, remove, thaw, and rinse.