Indoor putting green | Golf Monthly

I have soemthing I bought quite a few years ago at one of the London golf shows. They are called "Turf Tiles",and are an astro turf type thing on a plastic base that interlocks in all 4 directions. Each tile has a grain, and a stimp of about 11. I bought 2 boxes at the time, so I can have a putting track of anything up to 8 metres, or I can create any configuration with the amount I have. Normally, I dont have them all out, and leave then in a track and park my car over them in the garage.
I'm not sure if you can still get them, but they are pretty damned good.