GreenMaker Putting Green Kits are made with SYNLawn’s exclusive Precision Putt putting surface material that is scientifically researched and tested by tour player coach Dave Pelz to be the most realistic putting surface available today. This superior putting surface accurately reproduces true ball roll and consistent speeds. The proprietary Berrasof Core foam base panels provide a stable foundation and realistic feel. Practice chip shots from the fringe or short chips from off the green that bounce and roll like natural grass greens. 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.