This Aquadoodle mat lets you create amazing train track effects. Join Thomas and his friends in hours of creative mess-free fun. Soak the water tray and place the Thomas roller over the pad. Run Thomas over the magic mat and see the train tracks appear! Any water that does run off the mat runs clear. No mess, no stains, nothing to worry about! As the drawing dries, designs fade away, ready for the mat to be used over and over. When you need to just re-soak the tray and run Thomas over the tray and then go again. Create tracks and designs with the roller and easy-grip pen. When youve finished, the mat folds up for easy storage ready for the next exciting chapter as you explore your powers to create new scenes filled tracks and adventure.