Features 1. GAN 356RS features new Numerical Core and GES which makes the cube more stable and controllable, yet it can be easily tuned by hand. 2. BUTTERY SMOOTH CUBE - With honey comb design on the corner contact points, Gan 356 RS intended to to create a smoother feel and prolong the life of lubricant. 3. ABS material, made safe, BPA free and non-toxic, stick-less smooth surface, stable and not scattered. 4. Improve your concentrations, hand-eye combination; Improve the spatial thinking increase IQ level; Improve overall cognitive skills; Keep the mind sharp in old age. Specification Material: ABS Color: Multicolor Size: 6 x 6 x 6cm Weight: 125g Package Includes: 1 x CubePackage ListPackage Includes: 1 x Cube