This bike is made for kids who want to monster-truck over everything in their path. The kids' Diamondback El Oso Nino fat bike fits riders 44–54 in. tall, aged approximately 4–9 years old. This little bear's frame and fork are made from high-tensile steel for a smooth ride that's tough enough for prowling the neighborhood and the woods 4 in. wide tires offer amazing grip and sit atop 20 in. inch wheels, making for a unique style and ride Low tire pressure allows the bike to grab every bit of traction available, with extra float for soft surfaces and sand Apex mechanical disc brakes with 160 mm rotors front and rear provide great stopping power, allowing riders to go wherever the trail or their imagination takes them Shimano Tourney 1 x 7 speed drivetrain with Revo Grip Shift has 7 speeds to keep shifting simple and easy to master; Shimano grip shifter lets them charge up hills Specs and images are subject to change