Ball sets -Practice Golf Swing Trainer Aid Elbow Brace Support Adjustable Golf Belt Posture Practice Correct Guide Highlights generic brand Practice Golf Swing Trainer Aid Elbow Brace Support Adjustable Golf Belt Posture Practice Correct Guide Description: HIGH QUALITY: Made of quality nylon, durable and lightweight. It will not add pressure to you. USEFUL TOOL: It can help you keep your elbow straight when playing golf. ALARM NOTICE: With sounds when you bend your elbow, it can help you correct your posture. SIMPLE AND EFFECTIVE: It's easy to put on and take off, the adjustable stickers fit most people's arm, the correct position on the left arm should stay straight and not bend when swinging. APPLICATIONSuitable for beginners, social golfers, professional golfers, etc. Specification: Material: nylon Size (LxW): approx. 17.5x12.5cm / 6.9x4.9inch Package includes: 1 Piece Golf Swing Trainer Note: Due to lighting and screen settings, the actual color may vary slightly from the picture. Allow slight dimensional differences due to manual measurement.