Suitable for play on all court surfaces, the Dunlop ATP Championship tennis balls have the International Tennis Federation (ITF) approval and have been designed for recreational and club players. These mid-range tennis balls are endorsed by the ATP Tour and boast Max Core technology delivering all-round playability. They feature a premium, non-woven Durafelt HD Cloth for a combination of durability and consistency. The balls are supplied in a 1-dozen pack (three tubes of four balls).