Terra may be our most wallet-friendly ergonomic chair, but in no way does this mean it sacrifices on quality and options. All 3 of Terra’s seat sizes compliment all 3 ratchet backs. Terra’s easy to adjust controls offer posture back, synchro movement and advanced ergo features. The 6 adjustable arm options, many including an adjustable width bracket, ensure comfort in any space. Stool and tall stool kits can be applied. Customize with an upholstered fabric or leather back. COM options are also available.