Modular design makes the EasyStand Evolv the most versatile standing frame available. The Evolv is a modular "sit to stand" stander with over 60 support and positioning components. The base unit is functional for many users, however when more support is needed a wide variety of positioning components can be added to accommodate the most involved users. XT = Extra Tall. Fits individuals 6'-6'10" tall and up to 350 lbs. The seat depth range (from seat pivot) is 19?-24? and the seat height is 23.5". The upholstery is black and the frame comes in charcoal. The unit weighs 112 lbs. The minimum support package includes(no substitutions): Easy-Adjust Seat Depth, Removable Flat Back, Velcro Positioning Belt, Chest Strap, Black Molded Tray with Chest Pad, Manual Hydraulic Actuator with Handle, Flip-Up Knee Pad, Planar Seat, Multi-Adjustable Foot Plates, 5" Front Wheels, 5" Rear Locking Casters.