Yonex Muscle Power 40 Green Dot Tennis Balls (60 Balls) Gosen using a proprietary high pressure

using a proprietary high pressure manufacturing process

Model: VBS-66N

Suitable for long hours of use all day long

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

Yonex Muscle Power 40 Green Dot Tennis Balls (60 Balls) Gosen using a proprietary high pressureThe 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