The Condor hydration bladder (2.5 L) is equipped with quick-disconnect feature allows you convenient refill the reservoir without the hassle of removing & reinsert the drinking tube. In addition, the integrated built-in auto shut off valve stops water flow when disconnected. The large bite valve offers fast & unrestricted water flow when you need it most & quick shut-off valve when you don’t. Its low-profile design is compatible with all the Condor Hydration Packs.