BPA-free hydration bladder includes quick release hoses for convenient cleaning and a faster set up; Low-profile design to reduce sloshing during run; High-flow bite valve allows for easy access to water and doesn't drip when not in use; Large opening allows for easy fill and cleaning; Compatible with other Packs/Vests: Pinnacle Pro and Breeze Vests, VaporAir, VaporAiress, and QuickStart 3.0 Packs