Olympia Mammoth Ii 5 Piece Expandable Spinner Set, Black Constructed of supreme 1200D Polyester Recessed metal ball bearing in-line skate wheels Push button retractable handle Expandable for additional packing capacity except 18-inch carry-on Dimensions 34-inch Upright 34-inch x 22-inch x 12-inch, 29-inch Upright 29-inch x 19-inch x 10-inch, 25-inch Upright 25-inch x 17-inch x 9-inch, 21-inch Upright 21-inch x 14-inch x 8-inch, 18-inch upright 18-inchx12-inchx6-inch Constructed of supreme 1200D Polyester^Recessed metal ball bearing in-line skate wheels^Push button retractable handle^Expandable for additional packing capacity except 18-inch carry-on^Dimensions 34-inch Upright 34-inch x 22-inch x 12-inch, 29-inch Upright 29-inch x 19-inch x 10-inch, 25-inch Upright 25-inch x 17-inch x 9-inch,