With this Brainstring R your brain will be twisted in knots, until you solve it. Brainstring R is just as knotty as the original, but features a movable ball with a 360° spin that will have you on the ropes. Twist, turn, stretch and slide the puzzle in all directions to unravel the tightly wound knot. This will enhance your child's fine motor skills and spatial thinking. Once the strings are completely separated, the puzzle is solved - no strings attached.
