Just add water to bring all kinds of tough working vehicles magically to life. Filled with simple, black-and white images including a dump truck, fire truck, car transporter, concrete mixer and many more. Just use the brush provided to sweep water over the designs and vibrant colours magically appear! Great for keeping little ones busy and helping them learn brush control skills at the same time. Simply tuck the waterproof back flap under each page as it's painted, to stop water from seeping through to the rest of the book.