The Tempress Folding Bench Seat is made with a light weight corrosion proof aluminum frame back and a heavy duty high density polyethylene plastic base. This allows for extreme durability, light weight, and easy installation in a wide variety of configurations. Folds with black powder coated hinges, and is covered in 30 oz. marine grade UV stable vinyl. The high density 4″ thick foam inside provides perfect support and cushioning for those days when the weather gets rough.