Ergonomic Kneeling Posture The ergonomic kneeling posture is different from the traditional back-rest sitting posture. It transfers the pressure of the spine to the front of the thigh,greatly relieving back and cervical pain. Improve your concentration and work efficiency at the desk Comfortable sitting experience The large arc thick memory foam cushion is more comfortable than the kneeling chair with thin cushion, and more suitable for human buttocks. Helps improve blood circulation. The backrest provides strong support for the back and relieves spinal pressure 3-color Replaceable Covers There are 3 colors of beige, grey, and black. Can be replaced according to personal preference.