The new third-generation 4220SW improves on our best-selling walking foot, compound feed sewing machine with the inclusion of Direct Drive Technology. Equipped with a convenient height adjustment lever to accommodate different thicknesses of material. Whether you are sewing upholstery, bags, heavy canvas, or a variety of other heavy materials, the 4220SW is built tough. Direct Drive offers the best user experience. From index stitching to a programmable needle positioner to digital speed control, the 4220SW is the Walking Foot Sewing machine you have been waiting for. Ideal for sewing medium to heavyweight leather, upholstery, canvas, and synthetics.