The Robert Exterior dining chair was designed by Robert W. in 1901. It is made in the weater-resistant materials Alu-Rattan and ArtFibre. Alu-Rattan is weatherproof powder coated aluminum, and ArtFibre is artificial fibers made of maintenance-free polyethylene that can withstand the sun's UV radiation. Due to the weatherproof materials, the furniture can withstand being outside throughout the year without maintenance.