Mash-Up Colouring Set Monster Mash introduces kids to a colourful cast of classic mix and match costumes. These spiral bound flip pages can be coloured in to create 32 dress up costumes or mix them up to create infinite mash-ups. You can even draw your own heads, bodies and legs on the blank pages provided. Switch and swap the pages to create your own wonderful characters. With no right or wrong combinations (but loads of silly ones) Dress Ups is perfect for open-ended play.