These scooter boards are designed for children or individuals who have physical developmental disabilities to help users further their gross motor skills by sitting and moving around by pushing off the floor with their legs. High impact resistant. Allow movement in any direction. Grasp inside handles to protect fingers during play. MATERIALS: Molded polypropylene, nylon casters. DIMENSIONS: 12 inch Length x 12 inch Width. COLORS: Purple, Orange, Yellow, Green, Blue, or Red.