Penn joined forces with top professional players to develop this ball

Babolat Touch VS tennis strings continue to set the standard for natural gut with the addition of the new BT7 layering structure that increases the strings durability by 15%

Comes with a recovery guide

just like the can

these tennis balls last 22% longer than average

Luxilon ALU Power 18 (1.15) Silver Size_08558.5 Wide (EE) Penn joined forces with topThe Luxilon ALU Power 18 strings are the most popular on the professional tour. These extremely durable strings resist movement to generate more power and optimum spin. If you want to play like the pros, then try the Luxilon ALU Power 18 and swing away! Durability: 7. 5 Power: 10 Control: 9 Comfort: 9. 5 Luxilon recommends lowering tension at least 10%.