Steve Spangler’s

Rainbow String Slime

8 fl oz (240 mL)

  • NEW FORMULA! No glue, no PVA, no Borax.
  • Squirt String Slime into the bowl of Activator solution. The instant the two liquids touch, you get solid String Slime. It’s that easy!
  • Safe to touch, twirl and twist as you explore the science of polymers.
  • Amazing fluorescent colors won’t stain your hands.


  • 240 mL (8 fl oz) of each color (Clear Glass, Hot Pink, Electric Blue, Neon Yellow, Tangerine Orange, & Radioactive Green)
  • 20 g – Activator Powder
  • Step-by-step Activity Guide with take-it-further activities