CH555 Monarch Executive Drafting Chairs. Designed for the ultimate seating comfort. Ergonomic features that provide lumbar support, include a contoured 2 1/2" padded backrest that adjusts forward and back and higher or lower; 19" x 17" seat cushion. Optional armrests available. The “Monarch” has a two-lever adjustment system. One lever adjusts the seat and back to tilt forward or back with ease. The other lever is a pneumatic fingertip adjustment that raises the chair from 25" to 30". Includes 22" diameter footring that can be adjusted to the desired height and then locked into position. Rugged 5-star black base for stability. 5 hooded dual casters for easy mobility. Styling, comfort and construction make the Monarch chair an outstanding value.