The Z Hydro M is perfect for short journeys thanks to its lightweight, resilient material, the 1.5L water bladder and its various pockets. Foam reinforcements make the pack comfy and the adjustable straps means the bag can be adapted to the shape of the rider. It is made from PEVA and is guaranteed to be BPA-free. The water bladder is easy to clean and transport. A zipped, velvet-lined pocket stores delicate items such as telephones, glasses.