5 1/8 in x 5 1/8 in x 4 1/2 in / 13 cm x 13 cm x 11.5 cm
Cardboard and Plastic
If you like Brainstring Original, you’ll love Brainstring Advanced!
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!