Lab In A Bag Testube, 15 Activ, Size: ScienceKit Make 20 feet of blue polymer worms - instantly Amaze your friends with the wonders of polymers Make a super bouncing ball out of powder It's the same method facctories use to mold plastics Write messages with disappearing ink Play with touchable bubbles, they don't pop, now how can that be? Grow amazing polymer jelly crystals and turn them into bright colors, making a rainbow in a test tube Learn More