The Wilson US Open Orange Tennis Balls and low compression and built for 10 and under tennis. These tennis balls are 50% slower than normal tennis balls that make them easier to help teach the game of tennis to younger kids. These balls are designed for 60 foot courts.

• Low Compression Tennis Ball for 10 and under Tennis
• Balls are 50% Slower than Normal Tennis Balls
• Designed for Stage 2, 60ft Courts
• USTA Approved
• Model Number: WRT13730B