karikun exercise ball, 65cm yoga ball, medicine ball chair for fitness - stability balance pilates core & workout with quick pump - upgraded anti burst slip resistance - home gym office chair karikun this design style integrates heaven, earth, and people. karikun always follows the green values of harmony between man and nature and advocates that in the development of resources, the enhancement of intelligence, efficiency, and functions will change the way and willingness of resource use, people and the environment. it includes a durable yoga ball and an easy use air ball pump (9”) our professional-quality yoga ball can hold up to 2000lbs of dynamic pressure