The clay is in small, resealable plastic cups and therefore does not dry out. The cups are hard to open and often erfodern the help of adults. The colors are very strong, few were in this set but double or very similar. Once mixed, the dough can not separate properly, but it can also create new colors this occur, but this is needed very intensive kneading. A bit annoying, I feel the smell, he is heavy in the air, reminiscent of sweets, etc. The dough is ready quickly without long pre-kneading.