This Vigosit Ergonomic Kneeling Chair is the perfect combination of modern design and ergonomic comfort. It features a three-inch thick mesh cushion for maximum support and four casters, two of which are lockable, for easy mobility. The adjustable swivel button with multiple mounting holes allows you to customize the cushion height and cross angle to suit your preference. The sturdy metal base is built to last and can support up to 250 pounds. The height can be adjusted from 21 to 31 inches, so you can find the most comfortable position. This chair is suitable for a variety of scenes, from office work to leisure activities, and can help you maintain a healthy posture and reduce hunchback.