Furniture grade plywood frame construction 18mm @ 11 ply & 18mm @ 14 plyHardwood Plywood, Mortise and tenon frames with glued joints and corner blocks, CARB certified, promotes stability, durability & longevityLeather features distinctive design and luxurious feel, upholstered in top grain leather w/split grain leather on the (outside) sides & backSuperior individual pocketed coil springs in seat cushion, encased in foam padding, wrapped in DacronHigh performance seat comfort w/1.8lb density reflex foam for stablility, durability and longevity.Medium seat density.