The H2 fuelpack is a high performance mobile hydration system based on an ultra light hydration harness. The construction gives a fantastic flexible and stable fit on the upper body where the liquid container is fixed tight on the back which prevents a "bumping tank." The ergonomic fit of the harness angle allows free and forceful body movements, without impairing safety and comfort by the Leatt-Brace, and the absorption of oxygen of the muscles of the upper body and arms. The buckles on the one size harness permit a large number of adjustment possibilities, facilitating the adjustment to different body constitutions. This is an outstanding hydration system for enduro, xc and freeride bicycling.