the Fill N Drill™ weighs 43½ ounces

Durable construction keeps its shape

Sorbothane insoles are your best defense against foot pain

Breathable mesh fabric in back for a soft

With an easy to use and completely safe peel and stick application

Penn QST 60 Felt 12 Pack FREIGHTCODE-B the Fill N Drill™ weighsThe Penn QST 60 Felt 12 Pack of Training Balls are geared toward more advanced young players between ages 9 and 10 hitting on a 60 foot tennis court. These balls feature a low compression designed core that allows for the chance to have longer rallies. The bold yellow and orange felt stands out on the court. 12 balls per package. Two tone felt with low compression core. USTA and ITF approved and endorsed by the PTR.