JUST USE WATER: This water-reveal activity pad features 4 aqua art sheets and 4 story sheets, putting an awesome, Bluey spin on traditional coloring books - no paints, no markers, no mess! | REUSABLE: When the pen runs out of water and the colors fade away, simply refill and reuse to bring them back to life! | REVEAL SURPRISES: Fill the provided brush pen with water to color on the pages to reveal the vibrant colors underneath with all kinds of hidden surprises! | REVEAL SURPRISES: Fill the provided brush pen with water to color on the pages to reveal the vibrant colors underneath with all kinds of hidden surprises! | KIT INCLUDES: 1 Spiral-Bound Water Reveal Pad (6 in. x 7.5 in., 4 Sheets), 1 Water Brush Pen