Hydro-Grid, Har-Tru tennis courts help Waterside owners enjoy a safer more controlled tennis match. This state-of-the-art surface is flexible and therefore easier on the body than other types of courts.  Har-Tru courts retain moisture, keeping the surface cooler than hard courts, allowing for more comfortable play on hot days.  Har-Tru tennis court surfaces also dry quickly after rainfall, absorbing water through the surface and leaving the court ready for play.  Courts are equipped with lighting for night-time games.