Choose from a straight leg chair, sled base, and adjustable back position and wheeled seat. The wheel seats has adjustable seat height, 360 degree swivel, tilting, and a tilt lock. For colors, black, brown, burgundy, gray, and green all come in 100% receycled fabric, there is also the option for the easy to clean black vinyl. All these chairs have a capacity of 250 pounds. The arm rests all come with these chairs. Assembly is required.