Many individuals buy soccer balls based only on the price of the ball. If a ball is pricey, it is of good quality, and if it is inexpensive, it is of low quality. That is not always the case. Many players, coaches, teams, and even experts are unsure about which ball to purchase for their specific needs. A cheap ball may actually be better for practice than a high-quality ball because it will bend more easily back into shape if it is overshot or kicked too hard. The type of soccer ball that you choose depends on how you plan to use it and on your budget. There are standard size balls available at any price point, while special sizes and designs are also sold under such names as "pro" or "junior." There are three types of soccer balls: indoor, outdoor, and turf. Indoor balls are best for use in controlled environments such as arenas or gymnasiums because they last longer and don't get as dirty as outdoor balls do after being exposed to moisture and dirt from games or exercise outside. Outdoor balls are designed to hold up better to weather conditions and have a coating that helps prevent water penetration and loss of air pressure. Turf balls are designed for use on grass surfaces and have pebbles or plastic pellets embedded in the surface to provide extra traction. These balls are best for game day use because they have greater durability and are less likely to be scuffed up during practice sessions.