A wide range of options for use in all living spaces such as homes, offices or public places. Comfy, cozy and adaptable despite its simple looks. Structural flexibility with durable, elastic mesh backrest. A variety of personalization options. Optional armrests. Trea Dyna-Support® reacts to the weight of you, eliminating the need to make any special adjustments. It is a weight activated mechanism with synchronous motion that helps keep your body in a healthy, natural position through average working hours.