Moyu - Meilong 4 x 4 Speed Cube Blister PackMoyu Meilong 4 x 4 Speed Cube will provide hours of entertainment. Encourages creative play and helps develop imagination. It makes a great gift for game lovers. Simple to learn and easy to play. Great for holidays, game nights, office parties, get togethers, reunions.A high capacity well rounded design for excellent fault tolerance, each layer is locked in layes to prevent the frame falling.Any type of cube puzzle that needs to be turned and manipulated builds hand and finger strength which in turn helps will fine motor skill development. They also encourage visual reasoning skills, hand eye coordination and patience.