SYNLawn Portable Putting Greens are made with proprietary Precision Putt nylon material which looks, feels, and performs like a natural grass putting green. This is the same premium nylon material used in thousands of SYNLawn custom putting green installations and is tested and used by tour players and coaches. Practicing and training on this realistic putting green with true ball roll and consistent speed will improve your game and lower your scores when you take it to the course. Can be used indoors and outdoors at home, office, school, backyards, patios, basements, and decks. Makes a great gift and a perfect addition to any golf practice studio or home simulator setup.