A "Swing Coach" is a tool or device designed to help golfers improve their swing technique. It typically provides feedback on swing mechanics, helping players understand their posture, grip, and follow-through. By using a swing coach, golfers can practice more effectively and make adjustments to enhance their performance on the course. Many swing coaches come with built-in sensors or video analysis features that track the golfer's movements. This technology allows players to visualize their swings and identify areas for improvement. Some popular brands of swing coaches include TrackMan and SkyTrak, which are widely used by both amateurs and professionals.