Melissa & Doug Sticker WOW! is a whole new way to play with stickers! Pop the convenient sticker stack of 300 assorted stickers into any Sticker WOW! Sticker Stamper cartridge, and stamp away, anywhere, anytime! With 100 unique designs in every sticker stack, each sticker stamped is a surprise. Sticker WOW! Refill Stickers are easy to remove and are great for creative arts and crafts projects. Refill Stickers are a natural complement to the Sticker WOW! Olive the Dinosaur sticker stamper, but they are compatible with all the cute and collectible Sticker WOW! sticker stampers (sticker stamper not included). Sticker WOW! promotes fine motor skills, encourages creative play, and its satisfying, fidget fun!