Fold, loop, bend, twist, and turn to find a solution! Patterned challenge cards invite curiosity, logic, determination Brainteaser & mind-builder - refines visual spatial skills. Ideal for brain stimulation and relaxation. 

Includes 1 Ivan's Hinge Puzzle, 56 Challenge Cards 

Exceptionally high quality construction and materials. Created by famed puzzle creator Ivan Moscovich.

Ages 8 and up