The Head Instinct 25 is part of the Instinct Junior Series from Head, the Instinct 25 is inspired by Maria Sharapova and features an aluminum frame construction that is ideal for a 8-10 year old. This racquet is a great learning racquet for kids with a larger sweetspot and excellent maneuverability. The 107 sq. inch head size features a large sweet spot and packs plenty of power. The grip size is 3 7/8, which is perfect for this age group.