Abstract: A golf swing training aid is configured to be worn by a player during practice swings or while playing the game of golf. The golf swing training aid includes a forearm plate strapped to the forearm, a thumb plate is strapped to the thumb, and a pivot that connects the thumb plate to the forearm plate. When donned, the pivot is positioned on the radial area of the wrist so that the hand is substantially restricted to extension and flexion movement relative to the forearm throughout the swing. The golf swing training aid automatically positions the player's hands in the correct position and provides muscle memory that instills proper positioning and movement of the arms and hands even when removed for actual game play.