Golf Swing Trainer for Arms - Correct Distance Training Aid Product Color: Black Diameter: 35 x 7 cm Package Weight: 32g per piece Delivery Content: 1 x Golf Swing Trainer [Application]: This golf training aid helps golfers detect left arm curvature during the swing, promoting a straight arm position for a more effective and consistent stroke. Ideal for golfers of all levels, especially beginners. [Sound Prompt for Incorrect Posture]: The trainer features an integrated alarm mechanism made from special material that produces a clicking sound when the elbow bends during the swing. This alerts the user to incorrect posture, prompting immediate correction to maintain a straight left arm. [Adjustable and Portable]: Equipped with strong Velcro and a secure buckle, the trainer is adjustable and easy to put on and take off. The durable plastic buckle is designed to avoid skin irritation, unlike thin metal buckles. Fits most arm sizes with an elbow circumference up to 33 cm. [Stable Fit and Effective Feedback]: Unlike basic belt-style trainers, this model wraps fully around the elbow, providing a secure fit that stays in place and delivers more reliable feedback during training. [Breathable Material]: Made from high-quality, breathable nylon fabric, webbing, and Velcro fastener, the trainer is lightweight, durable, and comfortable for extended use without causing discomfort.