Yonex Muscle Power 40 Green Dot Tennis Balls (60 Balls) Gosen Graphene 360+ - Optimised energy

Graphene 360+ - Optimised energy transfer

The outside has Selkirk's signature “S” embedded into a sleek

and the worlds greatest racket sport athlete

Free sizing (comes in one size only)

The softest

Yonex Muscle Power 40 Green Dot Tennis Balls (60 Balls) Gosen Graphene 360+ - Optimised energyThe Yonex Muscle Power 40 Green Dot Tennis Balls (60 Balls) are stage 1 training balls designed to help young players develop fundamental skills with confidence. These balls travel approximately 25 % slower than standard ITF approved tennis balls, making rallies easier to sustain and giving learners more time to react and position themselves on court. Part of Yonexs progressive junior training system, Muscle Power 40 balls are ideal for school