Chris Martin's squared-off take on the archetypical shell chair gets a height-adjustable, swivel version with a sturdy 5-star base on castors. His layered, glued wood seating takes its name from the curved bar that tops the backrest in solid oak or beech, a touch that defines the chair's shape and finishes it off much like a serif on a letterform. Ideal for offices as well informal work spaces, Serif's varied base options complement the chair's range of wood finishes.