A composite sheet comprising an upper layer 2 and a lower layer 3 both made of a substantially inextensible sheet which are partially bonded to each other at a large number of joints 4. The torsion bar is connected to platforms on which the user places his feet, and the underside of said platforms contain casters which enable the skateboard and its user to move in linear or non-linear directions as desired with just one initial push from the ground. The method of mounting the fastener to its desired location and locking a retention washer and fastener in place is easily performed by employing a tool which disposes the threaded mating part, for example, a screw or bolt, into the central threaded opening of the outer end of the fastener. The receiver includes a channel estimator configured to derive a channel estimation for all of the multiplicity of transmit antennas using the received pilot reference signals and known or estimated spatial correlation among the multiplicity of transmit antennas. Conductive material that may be smeared across an edge of the laminate will not therefore provide an electrical short between the portion of the conductive layer surrounded by the slot and the second conductive layer on the opposite side of the insulation layer. The ordering system transmits a message to the merchant that includes information on the good or service being purchased to permit the merchant to provide the good or service.