Popanga sofa yapamwamba kwambiri, kusankha kwazinthu kumagwira ntchito yofunika kwambiri pakuzindikira kulimba komanso kutonthoza kwa chinthu chomaliza. Chimodzi mwazinthu zomwe nthawi zambiri zimanyalanyazidwa koma zofunika kwambiri ndi ukonde wamphamvu kwambiri wa polyester. Kulumikizana uku ndi gawo lofunikira popereka chithandizo ndi kukhazikika kwa malo okhala sofa, ndikupangitsa kuti ikhale yofunika kwambiri kwa opanga ndi ogula.