Steve Spangler Science® String Slime™ Deluxe Set $24,99 favorite_border Steve Spangler Science® Mix-up the Activator Solution and squirt your favorite String Slime™ color into the liquid. The instant the two liquids touch, you get solid String Slime. It’s that easy! Explore the science of polymers with this exciting kit No glu See at Discountschoolsupply See all Science
