Superior Fitness 2000 lb Exercise Yoga Stability Ball With Heavy Duty Gym Quality Resistance Bands & Pump - Improves 55CM Size Perfect For Home Office Physical Therapy All While Working Core Burn Fat While Toning music Anti-Burst - Made with thick and durable materials,2 Millimeter thickrated up to 2000 pounds-- Strong enough to use as a daily Exercise Ball Office Chair and a Fitness Ball for Women and Men. Slip resistant - We use high quality materials which provides an excellent slip resistant experience while caring for your safety Easy to clean - Our fitness ball is easy to clean with just a soft damp cloth. Most important, our fitness ball is phthalates free and doesn't contain any heavy metal elements Extras - A free foot-pump is included! A free starter kit is included!