A device (1) and a method for improving the posture of a user are provided. The device (1) comprises a first armband (2) and a second armband (3) intended to be worn at the uppermost portion of a left arm (4) and a right arm (5), respectively at least one first strip (6) fixed to a front part of the first armband (2) and to a back part of the second armband (3) and at least one second strip (7) fixed to a front part of the second armband (3) and to a back part of the first armband (2).
