Hydration bladder suitable for EVOC Hip Pack and Hip Pack Pro. The Hip Pack Hydration Bladder from EVOC is a lightweight and durable hydration bladder designed for the Hip Pack and Hip Pack Pro. The flexible drinking tube, approximately 95 cm long, can be easily detached (an automatic shut-off valve prevents leaking) to conveniently refill the container from the backpack. The bite valve automatically seals after each sip. The hydration system can be filled with hot water up to 60 °C. The large opening at the top makes the Hip Pack Hydration Bladder easy to clean. No leaks and easy to fill, thanks to the Slide Seal. With Plug-n-Play, the tube can be removed with a single motion. It has a capacity of 1.5 liters. BPA and PVC free.