Le Petit Tennis - My First Tennis Ball (6" Inflatable Tennis Ball - Pack of 10 + Handy Pump) for Ages 2-6 10 Award winning Inflatable balls (NEW HOT ITEM) from Le Petit Tennis The BEST BALLS to introduce young children to tennis Used by the French Tennis Federation, Tennis Canada, the Qatar Tennis Federation in all mini-tennis programs Specialy developed for the 3,4,5 years old children. The Best first ball to pay tennis. Slowest bounce (90% slower than regular tennis balls); Much slower than the RED Stage 3 Tennis balls.