Sorbothane insoles are recommended by doctors

so they won't go flat as quickly

The 17 gauge is even thinner for increased feel on those touch shots

open the valve and start cleaning with up to 90% less water

added comfort and enhanced durability from Tecnifibre's Multifeel 17 string

Penn Championship Pink Extra Duty 12 Cans COLLECTION-Additional-Accessories Sorbothane insoles are recommended byWhether you're playing for trophies, or just for fun, Penn Championship Pink Extra Duty tennis balls are the go to balls around the world. Extra Duty felt stands up to all the wear and tear of hard courts so you can count on a consistent performance every time they hit the court. The Championship ball is for players who demand as much of their tennis balls as they do of themselves. Provides consistent performance. Each can contains 3 tennis balls.