first molding station 50 to form an outer sole portion 26a in a mold cavity defined by a mold piston 51 and side molds 52 which form the sides and top of the mold cavity the piston 51 is slidably mounted in a cylinder 53 for moving the piston 51 vertically from the first molding station 50 to a second molding station 55 where the second color thermoplastic material i e inner sole portion 30a is molded onto a lasted upper 58 fig1 after molding of the outer sole portion 26a the side molds 52 are opened and the piston 51 is moved upwardly to the second molding station 55 where side molds 57 and the lasted upper 58 are moved into position to form a second mold cavity for molding the inner sole portion 30a the apparatus of fig1 and 12 is identical to that of fig9 and 10 except the special side molds 51 are replaced by conventional side molds 58 and a dummy last 60 is used to close the top of the mold cavity in the molding of the outer sole portion 26a thus the two molding stations are in one location and after molding of the outer sole portion 26a the only actions required are replacement of the dummy last 60 with a lasted upper 61 and upward movement of the mold piston 51 the dummy last 60 and lasted upper 61 could be mounted on piston rods.