These refillable water brushes are great for practicing writing, counting and more. Kids will have a blast revealing colorful scenes, which disappear when dry to be revealed again and again. Featuring Numbers, Vehicles, Animals and Letters, these mess-free educational activities are perfect for on-the-go fun!• Color with water to reveal art, let dry and redo• Practice fine-motor skills• Set of 4 Water Art Books: Numbers, Letters, Animals & Vehicles each containing 5 fun scenes• Includes refillable water pen• Each book measures 11.25” W x 8.75” H x 1” DAge Recommendation: Ages 3 and up