The Citadel Collection by Diamond Sofa is a Le-Corbusier-inspired design with an exposed tubular steel wrap-around frame . Covered with plush, deep cushioning, this contemporary collection offers a modern approach to a classic frame. The Black Bonded Leather Chair features a kiln-dried hardwood frame that is glued and reinforced, offers strength, while the zig zag spring suspension base gives you a supple seating that will hold up for years. The elastic webbing back suspension offers additional stability while allowing for the leather to breathe and maintain its shape. Seat cushions are comprised of a high density foam cushion wrapped in polyester fibers to ensure a comfortable, relaxing and lasting seat. Seat cushions and back pillows are attached to the frame to eliminate shifts or gaps. The crisp and angular lines promote an aura of strikingly modern comfort. Deep Black, Bonded leather finishes the piece, to provide and ensure years of comfort and enjoyment. Citadel Sofa measures 39 inches wide by 33 inches deep by 28 inches high.