This sand-in-motion flows and shapes just like wet sand, but leaves surfaces completely dry and mess-free. Kid Art Dynamic Sand sticks to itself and not to kids, so it can be easily cleaned up and stored. It oozes, moves and melts right before your eyes. It flows through fingers just like real sand and leaves them completely dry, but when pressed together, it sticks to itself and keeps its shape! It is totally reusable and it never dries out.