The surface of a pickleball court can be made of asphalt or concrete. The Pickleball Association (USPA) recommends that courts have a smooth, level surface with no cracks or irregularities. The color of the court should be light so that the ball is visible to players. Asphalt surfaces are usually made up of two types of material: aggregate and binder. Aggregate is the rock or gravel that makes up most of the asphalt surface. Binder is the glue that holds everything together and gives asphalt its black color. Concrete surfaces can also be used for pickleball courts.