It's true: kids just wanna' have fun. But, ask five kids what's "fun" and you'll get six different answers. That's why we make the Hotrocks as rugged and versatile as possible, and build them entirely with real-world kids in mind. Above all, these bikes are fun, durable, and reliable. This Hotrock features 20-inch wheels, 1-speed with a coaster (pedal) brake, and an A1 Premium Aluminum frame. Boys & girls models available. This one happens to be designed for boys.