Gamma Revolution Foam Ball (Package of 12)
The GAMMA Revolution Foam Ball is USTA Approved for 10 and Under Tennis. Ideal for ages 8 and under on a 36' court with the 10 and Under Tennis or Tennis 10's format. 75 percent slower speed than a standard tennis ball. Two-tone surface helps to learn and practice spin. USTA/ITF Stage 3 specification. 12 Pack.