The toy has a positive effect on the formation of the child's logical thinking, attentiveness and perseverance, promotes the development of tactile and visual perception, as well as fine motor skills. Rotate & slide puzzle is a puzzle that develops a child's thinking and logic, has a cylinder shape and is made up of multi-colored elements. Each piece of the puzzle must be assembled into a single color line. All elements are easily and smoothly rotated 360 degrees. Size: 6. 5cmx4cm