The Hydraulics reservoir by Osprey is designed to offer maximum stability and ease of use for staying hydrated during outdoor adventures. The pour Shield and Slide-Seal Top-Opening: The combination of a pour shield and a Slide-Seal top-opening enables easy filling and emptying of the reservoir. It allows for complete access, facilitating thorough cleaning after use.Osprey Hydraulics Anatomically Shaped Back Plate: This unique back plate design not only provides stability but also creates a flat profile, ensuring that the reservoir easily slides in and out of your pack. With a bite valve that's is equipped with a magnetic feature, allowing for easy stowage and quick access to water while on the move. Additionally, the bite valve incorporates an easy on/off twist lock system, ensuring leak-free operation when not in use. TPU Material: The reservoir is constructed from strong yet lightweight TPU (Thermoplastic Polyurethane) material. This material is designed to withstand extreme temperatures, allowing you to use the reservoir with freezing or hot water as needed. Finally, the QuickConnect System enables easy removal of the reservoir for loading, replacement, and cleaning purposes. It adds convenience and flexibility to the overall reservoir management process.Weight: 0.2KGDimensions (CM): 39L / 19W / 6.5DMaterials: TPU FILMVolume: 2.5LLitre: 2.5LAnatomically shaped Hydraulics ReservoirRemovable and replaceable hose and bite valveLitre markings printed on reservoir bodySlide-seal top opening for easy filling and cleaningPour shield extends the collar for easy fillingCarry handle allows easy reservoir management and fillingBite Valve offers fast, smooth water deliveryMade from a tough durable TPU material