Teens who need to move while they study or work at a desk can adjust this wobble chair to match a growing body instead of outgrowing it. A one-touch lift button raises or lowers the seat from 15.7 to 21.7 inches, while the 360-degree swivel base lets the sitter rock, turn, or lean forward during homework or online classes. Built for ages 12 to 18, the frame combines PVC, ABS, iron, TPR, and nylon fiber components with a gray TPR non-slip curved base that grips the floor and a chrome gas lift that rotates 150 degrees. It's rated to hold up to 105.8 pounds, and the foam-topped cushion absorbs vibration to ease back pressure during long sitting sessions. At about 13 x 13 inches wide and 10.8 pounds, the black chair assembles in four steps and is easy for a teen to move between a bedroom desk, home office, or classroom.