Brainstring Advanced

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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! Ages: 7+ Show more