Designed for hard courts at elevation, the Dunlop Grand Prix Extra Duty High Altitude ball delivers controlled bounce, consistent play, and long-lasting durability. Its Extra Duty felt and altitude-optimized construction make it ideal for competitive matches in thinner air conditions.
The Dunlop Grand Prix Extra Duty High Altitude tennis ball is engineered specifically for hard courts at higher elevations (above 4,000ft), where thinner air affects ball speed and bounce. Built for competitive players, it combines durability, consistency, and precision to deliver tour-level performance even in challenging high-altitude conditions. The Official high altitude ball of the ITA and College tennis.
High Altitude–Optimized Performance Specially designed to compensate for reduced air density, this ball delivers controlled bounce and predictable flight. Players can swing confidently, knowing the ball will respond consistently point after point, even in faster-playing elevated environments.
Extra Duty Felt for Hard Courts The durable woven Extra Duty felt construction is built to withstand abrasive hard court surfaces, maintaining its integrity through extended matches and intense practice sessions.
Consistent Feel & Control Engineered for elite play, the Grand Prix Extra Duty High Altitude ball provides a crisp, responsive feel. Its stable flight and reliable bounce allow for precise shot-making, accurate placement, and confident rallies.
Long-Lasting Durability Maintaining pressure, shape, and felt quality over time, this ball delivers extended playability and reduces the need for frequent ball changes during matches or training.
Ideal for Competitive Players Perfect for league play, tournaments, and advanced training at high-altitude venues, the Dunlop Grand Prix Extra Duty High Altitude tennis ball offers the performance, control, and reliability that serious players demand.
Whether competing or practicing at elevation, this ball ensures consistent performance, durability, and confidence with every stroke.