<ul><li>Folding, looping, bending, twisting, turning brainteaser you won\'t be able to put down</li><li>Pick out one of the 56 challenge cards, study the image</li><li>Brain-busting fun for all ages 8 and up, high quality construction and materials for lasting durability</li><li>Invites curiosity, logic, determination, strengthens visual-spatial skills, fine motor manipulation skills, etc.</li><li>Winner of parents\' choice recommended award, major fun award for puzzles</li></ul><br><br>Fold, loop, bend, twist, and turn to find a solution patterned challenge cards invite curiosity, logic & determination, visual spatial skills, brain stimulation, and relaxation. Created by famed puzzle creator Ivan moscovich, this puzzle is sure to excite .

Fat Brain Toys Ivan's Hinge Challenge Card