An improved treatment apparatus and method of using in which the device has plural protruding contact elements, each preferably having an undulating contact surface with one or more peaks. In one preferred embodiment, a plurality of contact elements are positioned spaced apart from one another in columns. In another device an elongated single column is provided. Mounting brackets are provided that enable a user to position the device easily and to adjust mounting straps and/or belts to a particular body shape. In one example, the device may include bracket apertures into which mounting brackets can be positioned. In another aspect of the invention, adjustable buckles and/or binders are provided can be used to adjust the length of the straps and secure the device to the wearer in use.