Abstract: Embodiments of the present general inventive concept provide a sport swing aid device configured to be worn around the head and/or neck of a wearer during a sports swing in order to encourage proper posture of the wearer's head before and during the sport swing. In some example embodiments, the device includes a solid rotation plate adapted to engage one side of the wearer's neck and mandibular region so as to prevent the wearer from rotating his or her head prematurely before and during a sport swing. The device also includes a conforming strap adapted to conform to and encircle the neck of the wearer, with a proximate end of the strap coupled to one side of the rotation plate and a distal end thereof provided with a means to releasably secure it to the rotation plate.