1. 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 golfers or golf lessons, especially beginners. 2. 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 should adjust the posture and keep your left arm straight. 3. 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. 4. 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 5. Breathable material: Our golf swing training aid is made of high qualityis durable and light; It won"t pressure you. Quantity shipped: 1 pcs (excluding other products in the picture) Product color: black Product size: about 17*11.5cm Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it