Impahla ye-TPU yi-thermoplastic polyurethane, engahlukaniswa ibe i-polyester ne-polyether. Ifilimu ye-TPU inezici ezinhle kakhulu zokungezwani komzimba okuphezulu, ukunwebeka okuphezulu, ukumelana nokugqoka okuphezulu nokumelana nokuguga, futhi inezici ezinhle kakhulu zokuvikela imvelo, okungezona ubuthi, ubufakazi bokukhunta kanye ne-antibacterial, biocompatibility, njll.