Authfort 3x3 Twist Cube Stickerless 2X2 & 3x3 High Speed Stickerless Cube combo pack of 3  (3 Pieces)

Multi-faceted development: (1) This is a classic puzzle cube that allows children to return to tradition, play to learn and learn to play, stay away from electronic products; (2) Effectively improve concentration, response, memory, and logical thinking skills; (3) Develop your child's patience and feel the sense of accomplishment after solving the problem and increasing your self-confidence; (4) Not only for children, but also for adults to relieve stress.