Low compression tennis ball ideal for ages 8 and under. Stage three ball ideal for use on 36 ft. courts and driveways. USA and ITF approved. Larger and easier to hit, 75 percent lower bounce than standard tennis balls. Large low compression tennis ball for 10 & Under tennis newly developed 75mm felt covered ball 75 percent lower bounce than standard tennis balls stage three ball ideal for use on 36 ft. courts and driveways USTA and ITF approved. Specifications: Color: Red/Yellow type: large low compression.