An example of an action that is a breach of Rule 13.1e is when: A player roughens or scrapes the grass on the putting green to determine which way the grain is growing. Examples of actions that are ...

The real magic is in the surface's directionality. BirdieBall's turf has a distinct grain just like on an actual putting green. You can see and feel the blades leaning slightly in one direction.

This innovative indoor putting green uses patented aerated foam technology to replicate the grain and speed of natural grass.