Melissa & Doug Sticker WOW!™ is a whole new way to play with stickers! Pop the convenient sticker stack of 200 assorted Surprise Pack stickers into any Sticker WOW!™ Sticker Stamper cartridge, and stamp, stamp, stamp, through 24 mini pages (approximately 2.25 in. by 4.25 in.) of fun-filled 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. Surprise Pack 1 Refill Stickers are compatible with all the cute and collectible Sticker WOW!™ sticker stampers (sticker stamper not included). Sticker WOW!™ (patent pending) promotes fine motor skills, encourages creative play, and it's satisfying, fidget fun!