The surface is with non slippery design. with 6 mangets, the twisting waist disc will stimulate acupuncture points on the feet,and promote good health. made of high quality materials, it is durable,lightweight and easy to carry. maage fitnes twist a waist dish like a can't move the skateboard and hula hoop, small footprint, easy to use, very practical to use. twist your waist to slimmer abs, hips and thighs. effectively burns calories and combines the advantage of aerobic exercise with reflexology. it's a perfect exercise equipment for home workouts. this fitness balance board is not only used as daily workout equipment, but also provides a stable workout rehabilitation and physical therapy for anyone trying to overcome an injury, suitable for adult athletes or dancers, kids playing sports, or seniors after surgery.