Le yibhokisi ye-cushion yomoya enqabileyo kakhulu, enezinto ezimbini ezikhethekileyo: 1. Isivalo sixhotyiswe ngesitayela se-gasket, kwaye ipaneli ephezulu ingenziwa ngeplastiki, isikhumba, idayimane, okanye iipaneli eziphezulu ze-quicksand; 2. Le mveliso yenzelwe isangqa esiseziko, esiza kuyenza ibonakale ngakumbi kwaye inobunewunewu.