Color: Black Diameter: 35 * 7cm Package weight: 32g / piece Scope of delivery: 1x sliders training equipment Use: With the sound of our golf training aid, golfers can detect incorrect left arm positions to keep the left arm in a straight position; Therefore, an effective and desired stroke can be gradually formed; Suitable for all golfers or for golf lessons, especially beginners Audible signal for incorrect posture: The golf swing trainer is an integrated alarm device made of special material that immediately generates a tick-tock sound when you bend your elbow during the swing. It warns you that you do not have the correct posture; You should adjust your posture and keep your left arm straight Adjustable and easy to carry: Strong Velcro and buckle make the golf training aid adjustable and easier to put on and take off; The thick plastic buckle will not scratch the skin like other thin metal buckles; It fits most people's elbow circumference up to 33 cm Not easy to move and better warning: Compared to other suppliers who have a simple belt, our golf trainer sits around the entire elbow, which means it is not easy to move and it can warn golfers better Breathable material: Our golf training aid is made of high-quality breathable nylon material, webbing, Velcro is durable and lightweight; It will not put you under pressure