Abstract: A pad assembly comprising, a plurality of flexible rectangular sheets (42), each sheet being generally of the same size and said sheets (42) having front (41) and rear (43) surfaces and peripheral edges including first (15) and second (16) opposite edges, said sheets having a band (40) of repositionable pressure sensitive adhesive coated on said rear surface (43) for adhering adjacent sheets together Said stripes (40) being substantially parallel to the first (15) and second (16) edges and being spaced by a first predetermined spacing (1) from said first edge (15) and by a second predetermined spacing (2) from said second edge (16), wherein the ratio between the spacing from the edge (19) of the band (40) closest to said first edge (15) to said first edge and the spacing from the edge (20) of the band (40) closest to said second edge to said second edge (16) is in the range of 0.1 to 10.