Modern outdoor seating with the rustic texture of wicker. And what’s even better? This wicker is made to last in the elements. The Orso Outdoor Side Chair - Set of 4 by Oxford Garden uses a polyethylene resin to create a durable, water-resistant and realistic-looking synthetic wicker seat and back. It sits on an aluminum bar base, which offsets the natural look of the wicker with its sleek, minimalist lines and smooth powder coated finish.