Zefal Z HYDRO XC is a backpack with a hydrobag for 2 to 3 hour long trips. Large opening on the top allows you to easily clean the 2-litre bag. Waist and chest straps provide posture even in demanding terrain. Foam reinforcement in the back of the backpack adjusts to the body. Z Hydro XC features a medium sized pocket, outer versatile storage space and other two storage spaces, including the soft compartment (for sunglasses or a phone).