Travelpro Marquis 21 Inch Spinner, Blue, One Size Durable and maneuverable spinner with replacable straight-motion wheels Patent-pending magnatrac self-aligning wheels Unique bottom tray aligns and stabilizes wheels Patent-pending powerscope extension handle with multiple stops Dimensions: 14" W X 20.5" L X 10.5" D Expands up to two inches Limited lifetime warranty