Abstract: The invention relates to a pad, or weight, for providing resistance to movement, wherein the pad comprises a holding medium and a plurality of bodies. The holding medium surrounds at least part of the bodies and retains them therein. The holding medium is substantially flexible so as to allow the pad to substantially flex to reflect a contoured surface of the user when in use. Additionally, the pad is provided with at least one substantially porous region to provide air-flow and the egress of water vapour from one side of the device to the other. The invention also extends to an attachment device for attaching a pad to a user.