Designed with P.E. teachers, the Rookie Kit is made for kids 13 and under. It comes with a larger ball and playing net than the standard Spikeball kit, making it easier to learn the game and keep points going. Longer points = more fun! EASIER SETUP - 5 new net markers and leg tabs for faster and easier net installation MORE DURABLE - Thicker and heavyweight rims to handle the hardest of spikes BOUNCIER BALL - A slightly smaller ball (compared to the original Rookie) means less pressure on the set and more competitive rallies