With 8 Sides Instead Of 6 And 3 Strings Per Side Instead Of 4, This Brainstring Offers An Even More Confounding Challenge! Make A Knot, Or Straight Lines, Or Makes Patterns Of Your Own With The Nylon Strings—Holding The Polycarbonate Orb And Grabbing The Strings The Ergonomic Nubs Is A Joy For The Brain And Your Fingers!