Flex: The product that started it all. With Suspension technology, the body literally 'floats' instead of being jammed into a plywood seat pan. This proven technology is the heart of A.D.I. seating and sets the line apart from all other manufacturers. The Flex group is a large family of chairs, but a notch above the ordinary. Models with independent fixed back or height and tilt adjustable back, with monoshell construction and flexible backrest, with regular upholstery or slim profile incorporate all of the group's best features: elegance, durability, removable upholstery covers, and that best dive watches famous Flex comfort.