Melissa & Doug Sticker WOW!™ is a whole new way to play with stickers! Pop the convenient sticker stack of assorted dinosaur stickers into any Sticker WOW!™ Sticker Stamper cartridge (sticker stamper not included), and stamp, stamp, stamp through mini pages (approximately 2.25 by 4.25 inches) of fun-filled prehistoric-themed counting and matching activities. With 100 unique designs in the sticker stack, each sticker stamped is a surprise. Sticker WOW!™ refill stickers are not reusable but are easy to remove if necessary and are great for creative arts and crafts projects. Dinosaur refill stickers are a natural complement to the Dinosaur Sticker WOW!™ sticker stamper, but they are compatible with all the cute and collectible Sticker WOW!™ sticker stampers. Sticker WOW!™ (patent pending) promotes fine motor skills, encourages creative play, and it's satisfying, fidget fun! Each set includes one 24-Page Mini Pad and 200 Stickers. Sold as a pack of 4 complete activity pad sets.