Description
Fitness Mania – Tretorn Tennis Trainer Spare Ball The Tretorn trainer spare ball is great to keep handy when you want to work on your swing with the Tretorn tennis trainer. Tretorn are the tennis ball experts and are a favourite brand for athletic guys and girls that want premium quality when it comes to their sport. This spare tennis ball has a slower speed that?s ideal for junior players (aged 9 -10) and beginner adults improving their technique. With the pressureless construct you get just the right level of bounce (but not too much so
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