So you would like to improve your balance and movement on a tennis court? The Oncourt Offcourt Flex Trainer can help. It comes with 3 resistance levels and helps you bend your knees and get closer to the ground while playing. It is great for football, basketball, and other sports too.
More gadgets like this ➡️ : here
The Flex Trainer comes with adjustable velcro, so it won’t get in your way as you practice.
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