Great advice on Sunbrella, I had mine done by a local shop and had them done in Sunbrella last year. The original material used by GW was a mold magnet. The new stuff has never had a touch of mold and clean-up is simple with a damp cloth. Well worth the extra bucks for Sunbrella marine material. I used Sunbrella Sail Cloth Sahara and they look greatMake sure they make them out of a sumbrella material so they will be waterproof and last a long time.