1). Design: patented nice new design 2). Advantage: quick, light and convenient for sports and travel 3). Frame: high quality engineering plastic 4). Big wheel: 26" / 20mm standard size 5). Down hill spokes; star wheel will come later 6). Small wheel: high quality all-direction wheel, 125 x 25mm 7). Axle base: 388mm 8). Ground clearance: 55mm 9). Max. loading capacity: 150kg or 330lbs 10). Drive mode: propelled by foot 11). Max. speed: 20km/h or 12.5 miles/h 12). Swerve angle: all directions 13). Brake type: rear brake activated by foot 14). Free tool kit for each item, 2% free spare parts for each order 15). Nice movie and DVD for promotion and training