Less pressure For children ages 4 to 6 and beginning adults preparing to go to a full-size court, HEAD T.I.P. I Red is the ideal ball. It helps the kids maintain complete control over their game and strokes because it is somewhat softer, larger, and only 25% slower than a regular tennis ball. The HEAD T.I.P. I Red, created in collaboration with trainers and children, is ideal for teaching young players and beginners how to use the full-size court.