Description: Material: Golf Swing training straight practice golf elbow brace corrector is made of nylon material, reliable and lightweight.Easy to Use: The Golf Swing Corrector helps you adjust your arm's bending motion easily, improving your swing and enhancing your overall performance. Quick and convenient to put on and take off.Alarm Alarm Device: Emits a prompt voice when the elbow bends, reinforcing proper swing .Portable: this golf swing training elbow brace corrector is compact and lightweight, making it easy to carry around in your golf bag.Versatile Training Device: This tool not only helps correct your golf swing but also improves posture and prevents injuries, making it an essential accessory for both beginners and professional players alike. Specification: Material: Nylon Size Chart: 17cmx11.5cm/6.69inchx4.53inch Package Includes: 1 Piece Elbow Brace for Golf Swing Training Note: Please allow slightly errors 1-2cm differences due to manual measurement.