Silly Squares provide hours of silly, wiggly, jiggly, educational fun! Place Silly Squares in a cup or bowl of water and watch in amazement as they grow to epic proportions. Silly Squares will grow 100ís of times their size! Try different colors and see which suites you best! Test your skill and try to stack them, build with them, and watch them slip away! Silly Squares are fun to bounce, roll, throw, and more! Silly Squares are safe for ages 4 and up, non-toxic, and environmentally friendly.