Flex your mind with Brainwright Flexi Puzzle, the bendy, stretchy brain-teaser that helps encourage spatial and three-dimensional thinking. Ideal for kids ages eight years and up, this deceptively simple puzzle consists of 12 colorful cubes, connected via an elastic string, and can be bent in every direction. Use the included challenge book to choose from 80 different challenges and four levels of difficulty as you move your way from beginner to master. New 2014