Frame Bench assembled Engineered wood frame assembly reinforced with corner blocking and kiln dried solid wood spring rails for warping prevention. Cushions 2.0 high density polyurethane foam combined with layers of fiber for superior seating comfort. Contains no flame retardants or harmful chemicals. Legs Solid wood. A required center leg is provided to be installed at time of assembly to increase the lifespan of the structural support and integrity of the upholstery. Suspension High gauge Sinuous Spring seat platform suspension (when applicable) balanced by a synthetic webbed back construction for a resilient and well balanced sit. Joints Glued, stapled and screwed to ensure frame stability and longevity. Assembly Screw on legs Style Loose back; loose seat Glue and Stains Water-based, low-VOC Size Variance Dimensions of bench-made upholstery may vary slightly.