Rainbow worms is just like Insta Worms and Instant Worms and is an awesome science polymer kit for kids. Insta Worms is a Steve Spangler creation and I met him at the NY Toy fair where I was able to see many of the toys up close with him demonstrating some of them! It's really cool science experiment that allows you to create your own polymer worm in rainbow or one color! It's up to you how you design and color it!
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