2.5-3.0L Shape-Shift Hydration Bladder With Plug-N-Play CouplingThe Shape Shift hydration system features a versatile baffle that can be zipped to reduce the bladder's profile or unzipped to increase fluid capacity. Made from thermoplastic polyurethane (TPU), the hydration bladder includes a 45 degree Blaster bite valve, an easy quick connector with Plug n Play capability, and a flexible, non kinking Hydraflex drink tube. For convenience, the hydration system is reversible, making cleaning and drying simple. The