I very happy with my Big Moss outdoor putting green it’s made real heavy duty and seem like it will last for years to come. I have made a permanent installation in my yard, I removed the grass and dug out a hole that I filled back in with fine gravel and then sand that I used a compactor to smooth and level the surface. I dig out for the cups and installed the flags now I have my own putting and chipping green!!! The green rolls the ball very well and the thick rubber mat backing makes the green soft to walk on. Chip shots check up and the included chipping mat has been fun to use