-- 3 synthetic grass courts in St Barths, French West Indies --
Synthetic grass is the most comfortable surface to play tennis.
It is soft and offers a medium game speed. It's the only surface which allows you to play all-year around, after a rain shower or when you have humid mornings...
He is covered with special tennis sand which gives you a "clay-like" experience for sliding.
If you have the chance to go to Mauritius, you'll see that 90% of the tennis courts there are synthetic grass.