If you like Brainstring Original you will LOVE Brainstring Advanced! With eight sides and four color groups, Brainstring Advanced is a playground at your fingertips – slip the strings through the pathways to create mighty knots, untangle the knots, slide the ergonomic nubs around without making a mess, or enjoy weaving your own designs. There are unlimited possible configurations, so brainstorm your way through the Brainstring Advanced! Brainstring Advanced is completely portable and travel-friendly. Solve the complex STEM focused challenge...or simply use it as a meditative fidget toy!