Umbuzo wokuba i-PET strap (i-polyester strap) inokutshintsha indawo yentsimbi yentsimbi yenye yemibuzo eqhelekileyo evela kubathengi bezoshishino. Ngamandla okuqina ukuya kuthi ga kwi-600 N/mm², ukubopha kwe-PET kunokufikelela kwiimfuno ezininzi zobunzima besicelo ngelixa ibonelela ngezibonelelo ezibalulekileyo kubunzima, ukhuseleko, kunye neendleko. Nangona kunjalo, izigqibo zokutshintshwa zixhomekeke kwiimfuno ezithile zomthwalo kunye neemeko zesicelo. Esi sikhokelo sithelekisa i-PET kunye nentsimbi yokubopha kuyo yonke imilinganiselo yokusebenza ephambili ukunceda abathengi benze izigqibo ezinolwazi.