Description Perfect anatomy and high standard of workmanship ensure a correct posture in various clinical procedures. Gnatus%u2019 stools were designed following the strictest standards of quality, ergonomics and functionality to provide complete freedom of movement for professionals. Stools come in several colors of padding, which adds more style to your office and more comfort for your day-to-day. Anatomic shell-type backrest with height adjustment. Easier to adjust positions, elevation system moved by gas, with smooth movements and regulation through the lateral lever.