This is a product my son insisted on having . When I saw the toy I thought it was not a very good item I even went as fars as to try to talk him out of buying it. He didn't listen and I am really glad he didn't this product has turned out to be one of the best toys I have ever seen for this price range. We have all enjoyed playing with him and his new "Moon Sand". All of my fears that the product would be like the products from when I was a child, Does anyone else remeber "Silly Sand"? This mold able sand holds its form very well and is very easy to clean up. It doesn't stick to everything, in fact it only seems to adhere to itself. This set came with two shades of gray sand to represent concrete castings of brick and sidewalk panels. There are other set available and I am sure we will aquire them at some point. I would recommend this toy for children of all ages even the ones my age (46) I have spent countless hours building and smashing the Moon Sand Sculptures. A very good product and a good price. If you have children you need Moon Sand, period. If you don't have this toy for your child yet you should consider it as a great gift idea. One of the best value to fun ratios I have ever run across. I know we will be purchasing some of the other sets in the future.