Fidget spinner with suction cupFEATURES Ergonomic design: Fits the size of the human hand, adults and children can't put it down. Smooth and round without hurting hands: No burrs, no injury to hands, no deformation, no hindrance. Leisure and entertainment fingertip toys: Helps relieve stress. Build eye and hand coordination skills, problem solving skills and expands the mind while sharpening your powers of deduction. Amazing toys for engineering or artistically minded children.