The theme continues, tennis can be sneaky expensive. Shoes, strings, balls, etc.
Some shoe makers have out-sole warranties, but the terms and conditions are not always clear and certain.
In general, the wear must be all the way through for the manufacturer to offer a replacement.
What if your favorite shoe is no longer available? Expect a voucher.
Will the manufacturer continue to replace the same shoe over and over? Not likely. 🙂