Innovative and elegant, this is a masterpiece designed by Harry Bertoia. Boasting a diamond-shaped profile, the Large Diamond Lounge Chair by Knoll is a fascinating blend of artistry and functionality. The grid-like frame is formed by welded steel rods giving it a strong, yet springy feel. Hidden mono-filament and metal hooks help attach the seat pad and cover directly to the frame. The sled base is made of steel rods and includes plastic glides that prevent damage to flooring.