Book Cubes fold, twist and turn in an intriguing and irresistable way. Packed with information for learning, testing, playing ..... in a fun and tactile way. Ideal size - 60mm x 60mm x 60mm Follow the path around the cube. 6 pages outside and 6 pages inside. Two ranges - Cute Cubes (Age 3 to 8), Cool Cubes (Age 6 to 106!)