The QiYi QiDi S 2x2 is the latest 2x2 from QiYi/MoFangGe. This is a Frosted Surface Cube. - Feels more texture and avoid the scratches after the long-time using. - Whole new vivid color work more effectively and more easier to recognize The Anti-stick Degin can prevent the cube viscosity,make the cube solve smoothlt. - Optimized parts of the round corner pieces,makes work coordinate effectively.enhance the corner cutting ability,make it more smooth when it solves. Solving puzzles and brain teasers are important activities to teach kids to work hard at solving complex problems and foster your kid's sense of space and enhance a child's memory. - Whether you're trying to stretch your brain capacity or spending some leisure time with your loved ones, this would be a great gift for your kids. Perfect Christmas gift/ birthday gift for kids. This classic puzzle game will never go out of style