The Lanbeitu Magical Water Painting Book Set Is A Fun And Creative Activity Set Designed For Young Children. It Includes A Magic Water Drawing Book, A Refillable Water Pen, And A Sheet Of Colorful Stickers. Kids Can Use The Special Water Pen To Paint On The Pages — The Black And White Images Magically Turn Into Colorful Scenes When Touched By Water. Once The Water Dries, The Pictures Disappear, Allowing Endless Reuse.