Near our house, there’s a spot with 17 training fields for soccer, lacrosse, baseball, and softball. By spring, there should be beautiful grass as usual, so all fields are covered with a “film”. It creates the impression of water instead of grass, especially against the sun. For the grass itself underneath, it’s not just an impression at all.
By the way, this grass cover is interesting in itself. The size of each piece is about a third of a soccer field, around 30×30 meters, so there are several on each field. Machinery is at work, deploying and securing them.

