Ergonomic Chair with Backrest for KidsThis Ergonomic Chair with Backrest for Kids is the perfect study partner. The solid back support proves a comfortable seating experience. Encourages correct and comfortable sitting posture at 90 to ensure the back, torso, knees, and feet are in the right position. The dynamic 3D backrest moves up, down, left, and right, providing steady support to the child's back, and encouraging good posture. Backrest Extension: Adjusts to the movement, ensuring no