I did not know there was such a thing, My daughter just bought one and it works tremendous. Sure does save a lot of time. She has made hers a 8ft by 10ft and it is absolutely beautiful. The crocheting is so easy. She just single crocheted the whole thing. Ovals, and rounds are the hardest I think as you have to keep your nose to the till to make sure all increases are in a good place to make it lay like store bought. My daughter sent for a square or oblong and it was too much work and trouble as then it wanted you to sew it together too. I came up with my own simple pattern and it just so easy. She bought all material with big roses in burgundy color, then cream, tan, dark brown and creqm. Different shades of burgundy mixed with the leaves and creams. You just can't buy one like it.