A set consists of two 18” silks and a 6” silk. Let’s detail the three silks:
Silk 1 is an 18” b/w picture of a monkey.
Silk 2 is an 18” colourful picture of a monkey.
Silk 3 is a 6” solid brown silk.

Obviously, the set lends itself perfectly to a Magic Colouring routine: the b/w silk is dropped into a Change Bag along with several small coloured silks (and that’s where the 6” brown silk comes in!) and out comes a colourful picture. You don’t have to use a Change Bag.