Abstract: A device for monitoring a posture of a user is provided. The device includes a belt adapted to encircle a torso of the user and provide an upward force to a spinal region of the user in response to a signal from a controller, and at least one sensor adapted to provide at least one measurement signal to the controller. The device also includes a feedback system activated by the controller to alert the user that a posture of the user is determined to be outside an acceptable range based on the at least one measurement signal. An ergonomic posture assisting system is provided that includes a detachable belt. A detachable belt is provided that includes a locking mechanism adapted to prevent the attachment mechanism from disconnecting in response to a signal. A posture feedback system and a device for monitoring a posture of a user are provided.