Pick your colour clay and mix away! There are 11 colours of clay to choose from, all highly pigmented for stunning colours in the finished product. You will get a beautiful thick, glossy and clicky 250ml white slime with a bag of soft clay to mix in yourself! Once mixed, the slime turns into a smooth, soft slay slime with amazing swirl ribbons and holdabilty. *Note: The black clay makes the slime go a nice gray, not black. Obviously Black + White = Gray.