These are hi-end commercial grade seating, very comfy and stylish! features: top manufacturer with 50 yrs of ergonomic & comfort development, combined with sleek styling Comm grade Pneumatic cylinder for all heights Industrial Casters Swivel tilt Locking adjust arms tension control 22 guage steel frame Leather arm pads Inv 89 Knoll Chadwick task seating 79 blk frame grey mesh 10 blk frame navy mesh 20 r 2010 rest r 05--07 47 Knoll Life chairs 35 chrome frame grey mesh back white leather seat pan 6 chrome frame blue mesh 6 chrome frame… orange mesh? Yikes ! Chadwick Retail pricer- 235 per In the biz for all 185 loaded Knoll Life pricer- Retail 425 In the biz 299 loaded! must take all!