Golf Swing Training Aid Elbow,golf Swing Train,straight Arm Golf Train Application: Through the sound of our golf training aid, golfers can detect their left arm curvature error in order to keep the left arm in a straight position; Therefore, an effective and desired blow can gradually be formed; Suitable for all golfersor golf lessons, especially beginners. Sound Prompt Incorrect Posture: The golf swing trainer is an integrated alarm device made of special material that immediately generates a sound when you bend your elbow while swinging. It alerts you that you are not in the correct posture; You shouldadjust the posture and keep your left arm straight. Adjustable and easy to carry: Strong Velcro and buckle make the golf training aids swing adjustable, easier to put on and take off; The thick plastic buckle does not scratch the skin like other thin metal buckles; It suits most people's arm. Not easy to change and better to warn: Compared to other suppliers which is a simple belt, our golf swing trainer is around the entire elbow, ours is not easy to move and it can better warn golfers Colour: Black Size: about 18*13CM Delivery quantity: 1 piece Warm prompt: 1. As different measuring methods, it will occur 1-3 cm deviation about the items, please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products.