Fat Tire Mountain Bicycle It is an ideal mountain bike for kids and young adult suitable for town pathways,city streets,sand road,mountain or other open roads. 24X4.0 Fat tires provide upgraded grip and traction on rough roads. The thickened shock absorbers help absorb shocks. 7 Speeds shimano transmission allows you to switch gears smoothly with your fingertips. Greatly improve the comfort during riding and enjoy riding.