A device for applying compression treatment to a part of a wearer's body has an inner face for being placed adjacent to the part of the wearer's body in use and an outer face opposite the inner face. The device includes a pressure applicator to apply compression to the wearer's body part. First and second fastener elements are mounted on the device. Hook indicia on the outer face of the device generally overlie patches of hook material on the inner face of the device. The hook indicia includes first colored areas and hook-engagement areas include second colored areas. Upon wrapping the device around the wearer's body part and fastening the patches of hook material at the respective hook-engagement areas, each first colored area and corresponding second colored area form a predetermined shape indicating that the device is properly placed on the body part.