?BASIC DATA? Rims: inner diameter of the hub is 26 Inch, the entire wheel (including rubber tires) is 29 inch, Freewheel: 21 Speed, Brake system: Disc Brake, Tire width: 4.0", Rider Height: 5.5‘-6.2', Rider Weight: less than 440 lbs, Unisex. ?FAT TIRE? Fashion supersized all-terrain knobby tires, high wear resistance, strong grip, non-slip, high recognition, comfortably ride in snow, mud, dirt, or city roads. ?HIGH QUALITY? High carbon steel frame is adopted, thickened front fork, good shock absorption, suitable for a variety of roads, which is resistant to deformation and tensile force, and has both quality and performance. ?EASY ASSEMBLY? The package includes all the tools you need for building and maintaining your own bicycle. All of this will take about 20-40 minutes. ?CUSTOMER SERVICE? If you have any questions or any problems of the product, please feel free to contact us, we will feedback and provide a solution within 24 hours.