Foam liner ke lesela la sepheo se akaretsang, se entsoeng ka foam e hatellehang ea polyethylene.Tsena ha li etse tiiso, 'me hangata li sebelisetsoa ho thibela ho lutla.
Foromo ea Liner ke liner tsa karolo e le 'ngoe, thepa ke EVA, EPE joalo-joalo.
Ka bohona, re romelle contractility le koung ea lijana.
E loketse mefuta eohle ea ho tiisa setshelo, e ka sebelisoa khafetsa, empa phello ea tiiso ke e akaretsang.
E ka sebelisoa ka mor'a le aluminium-plastiki composite membrane composite 'me phello ea ho tiisa e betere.
Likarolo tse ka sehloohong bakeng sa ho hloekisa, lerōle, ha li amohele mouoane oa metsi, eseng ka lebaka la mongobo kapa mocheso ho fetola botsitso ba oona.