To provide a service with fairness by providing QoS of approximately an equal degree among users of the same service class to keep fairness of the service as well as by maintaining a transmission rate at a predetermined ratio among users of different service classes to relatively keep QoS among service classes. The read head is provided with a position sensing unit opposite the position identification scale, and a motion sensing unit opposite the motion identification scale. The sole portion comprises a steam cavity and an outer rim extending around the steam cavity, the outer rim having a fabric contact surface and the steam cavity having a permeable element disposed therein.