The invention relates to a balloon for medical devices, in particular forcatheters, used inangioplasty, advantageously provided for high flexibility and conformabilityin combination witha low compliance curve. Said balloon comprises a polyamide copolymer materialcharacterizedin that said polyamide copolymer material is represented by the generalformula (I):H-(O-PF-OOC-PA-COO-PF-OOC-PA-CO)n-OH (I)in which PA is a polyamide segment and PF is a diol segment comprising dimerdiols and/orcorresponding OH-terminating diol polyesters and n is a number between 5 and20.
