MSV Focus Hex Ultra Tennis String 200m 16/1.30mm - White Shop By Brand/BabolaT/BabolaT Tennis Racquets The characteristics of Exbolt are

The characteristics of Exbolt are enhanced repulsion

MSV Focus HEX Plus 38 is a comfortable and arm friendly string that offers many of the features of the Focus HEX string with 38% more elasticity

The Ballhopper Pro 90 is a re-engineered version of the Pro 80 that nests together to ship in a more compact space to save shipping costs while providing greater ball capacity

There is also a junior model for 6-10 year old children

USTA Community Tennis even uses orange balls up to age 14

MSV Focus Hex Ultra Tennis String 200m 16/1.30mm - White Shop By Brand/BabolaT/BabolaT Tennis Racquets The characteristics of Exbolt areMSV Focus Hex Ultra Tennis String 200m 1. 30mm White Explosive and snappy co poly string with excellent tension maintenance and spin potential. Hexagonal shape and strong snap back effect for great spin potential. Special coating for reduced string movement.