Diggin Boomer The Boomer is the best club for any kid's first golf experience! Soft and safe, the club head is made from power soft foam for huge drives. The golf balls are twice the size of a regular golf ball, making it easy to hit. Comes with two balls, soft tee, and large, soft club head. Ages 4+. The Boomer is the best club for any kids first golf experience! Soft and safe, the club head is made from power soft foam for huge drives. The golf balls are twice the size of a regular golf ball, making it easy to hit. Comes with two balls, soft tee, and large, soft club head. Ages 4+.