Yogibo 65cm balance ball with fabric cover, allowing you to strengthen your core simply by sitting. Light gray color blends in with your interior. Size: 65 cm Design: With fabric cover, natural design Color: Light gray Features: Easy exercise How to use: Core training just by sitting Will be shipped folded. Instant purchase without comment is welcome. Shipped via Mercari delivery service. Balance ball Fitness Exercise Yoga Muscle training Muscle training Children Sports Core Study Work Chair Waist Thighs Legs Abdomen