Hiland 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. Whether it is for exercising,commuting or field exploring,our bicycle is great riding partner that meets your requirements. 20X4.0 Fat tires provide upgraded grip and traction on rough roads. These fat tires keep you safe and give you a smooth and easy ride even in the most challenging terrain and weather conditions.