Official game ball: The Dunlop ATP was developed for tennis of the absolute world top to meet the demands of the professionals - the official match ball of the ATP Tour is ITF certified All-rounder: this absolute premium tennis ball has been developed for precise high-end tennis on sand, hard and grass courts as well as in the hall and offers maximum performance in training and tournaments Accuracy: the felt in yellow guarantees the best visibility during quick ball changes and the ball remains bright and clear until the end, even during long games LONGER DURABILITY: Advanced core technology ensures even pressure for long-lasting performance. Sustainable packaging: label made from recycled paper, lid made of paper and recycled plastic as environmentally friendly packaging