Explosion-proof Thicken Fitness Ball / Adult Jumping Ball / Children Bouncing Ball / Lolo Ball / Rock N Hopper / Pogo Ball --Send Large Pump 1 ball sphere and ball plate are removable, so it doesn't stand space. Within 6-50 off by heavy 100Kg 2 ball plate is made from high-strength wear-resistant plastic , and the ball sphere is made from the highest quality PVC synthetic rubber. 3 ergonomically design, without any harm.