While the Economizer Traditional with arms has the same style as the Traditional Bench, we use lighter weight 1¼” x 5″ plastic lumber instead of standard 2″ x 6″ planks to provide a lower price point. All else remains the same, including stainless steel fasteners and 100% recycled plastic components. Sturdy arms match the frame and plank colors and the additional comfort the arms provide makes for a pleasant spot to rest and people-watch.