The invention relates to a balloon for medical devices, in particular for catheters used in angioplasty, comprising a polyamide copolymer material characterized in that said polyamide copolymer material is represented by the general formula (I):HO—(PF—OOC—PA-COO—PF—COO—PA)n-COOHin which PA is a polyamide segment and PF is a diol segment comprising dimer diols and/or corresponding OH-terminating diol polyesters and n is a number between 5 and 20.
