About this item NO-MESS ACTIVITY BOOK: The Melissa Doug On the Go Water Wow! Numbers Activity Pad features reusable pages that come to life when wet. 4 REUSABLE WHITE PAGES: Use the pen to fill in each activity and see hidden colors and pictures appear with every stroke! Then simply let the page dry to erase the pictures and fill it in again and again. REFILLABLE WATER PEN: This activity book comes with a chunky-sized water pen designed for smaller hands to easily grasp and fill. The compact, spiral-bound format is great for travel. GREAT GIFT FOR AGES 3 TO 7: This activity pad is a delightful and educational gift for kids ages 3 to 7 years. Add a Melissa Doug Reusable Sticker Pad to round out the hands-on and screen-free play experience. “THE GOLD STANDARD IN CHILDHOOD PLAY”: For more than 30 years, Melissa Doug has created beautifully designed imagination- and creativity-sparking products that NBC News called “the gold standard in early childhood play.” Perfect for a stocking stuffer