Back & seat construction of fabric sectional are both sinuous wire. Back cushions are (attached) block foam with polyester fiber cap. Seat cushions are loose (ventilated & reversible) block foam with polyester fiber wrap. Matching welt. Legs are 5.5 in x 5.5 in x 3 in H (Bolt-On) with medium brown finish. 20 in pillows (with a fringe option) are standard. Coil cushion & Frame Coil is optional at a small upcharge.