A basic grass that you use for trimmed lawns but also, and perhaps more importantly, for tufts in track beds, around building bases and to give definition to areas where you are adding 2 mm grass.
It is also used to add catch points on bushes, tree branches and vines.
25 or 30 gram package allows you to cover a large area.
You can see the many ways static grass is used at How To Use Static Grass