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WIMSO Exercise Ball Yoga Ball Chair for Fitness Balance Extra Thick Non-Slip Anti-Burst Bearing 2200lb with Quick Pump

plastic Imported PRINCIPLE:The WIMSO exercise ball can be used in homes and gyms. It can provide an unstable support surface, so that bodybuilders can use the deep muscles of the waist and abdomen during use, thereby activating the core muscles and improving the stability of the body.