The GolPhin GFK 324 Junior Orange - Driver (Ages 3-4) is ideal for junior golfers aged between 3 to 4, of heights between 39” – 43.5” tall.. This junior golf driver is built using aero-space alloy making it 22% lighter than other junior golf clubs, with a 35% larger sweet spot for consistently great shots.. The GolPhin GFK 324 Junior Orange - Driver (Ages 3-4) includes an oversized club head, 16-degree loft, and lightweight graphite shaft to promote confidence and a high launch angle.