Paunenge uchigadzira sofa yemhando yepamusoro, kusarudzwa kwezvinhu kunoita basa rakakosha pakuona kusimba uye kunyaradza kwechigadzirwa chekupedzisira. Imwe yeiyi inowanzo furatirwa asi yakakosha zvinhu ndeye yakakwirira-yakasimba polyester elastic webbing. Iyi webhupu chinhu chakakosha mukupa rutsigiro uye kugadzikana kune sofa nzvimbo yekugara, zvichiita kuti ive yakakosha kutariswa kune vanogadzira nevatengi zvakafanana.