Xenon White Shell Medium Back Black Fabric EX000094 DDElegant white or black acrylic shells cradle the most stylish of executive chairs the Xenon. The shell swoops down from the generously proportioned backrest to integral slim, shaped, arms which fold around to the underside of the seat shell. A high quality knee tilt ensures maximum comfort and avoids discomfort through upper leg blood vessel constriction. High density moulded foams and an integral contoured lumbar support add to the easy seating