System and method for carrying loads by a user are disclosed. According to embodiments of this invention a load is carried attached to the back of the user and concurrently vertically supported to the ground on supporting means. The system comprising means that allow vertical free movements of the load with respect to the user's back within a defined range so that the load substantially carried by the supporting means while providing stable attachment of the load to the user's back in two other linear axes of freedom and in all three circular axes of freedom. The supporting means includes means to adjust the support according to the user's height and to the grounds bumpiness.