Sum Lounge armchairDesign by Simon Legald The design is stringent and focused, but invitingly open in character: elegant and resolute as a wingspread stretching out into the air, the sofa spreads out its armrests and invites you into its soft and homely space. Slim, angled legs lift it from the floor in a delicate counterpoint to the generous contours of the back and armrest. Materials: The Sum modules are made of soft molded PU foam with a steel reinforcement structure