Orbeez - Stack 'ems
Orbeez are wet and wacky, soft and squishy, fun and funky, bouncy and beautiful. They start off hard and tiny. Add water and watch them grow to more than 100 times their volume. Comes with four colorful stacking containers for growing and storing your Orbeez. Includes 2,000 Orbeez in six colors, Play 'n Display Tray and Activity Booklet.