Turn putting practice into a game with the EyeLine Golf(R) Roll the Rock Challenge Putting Mat. Repetition can be tedious, but when you turn it into a game it becomes exciting. The Roll the Rock Challenge Mat includes multiple games and challenges to push yourself to improve your skills. Design Multiple engaging games to challenge yourself consistently without becoming tedious Instant feedback and gratification on improvement Helps improve on putting fundamentals such as: alignment, stroke length, tempo and visualization Dimensions: 12' x 2'