Feature: Product Size: The original size of golf swing trainer is about 38cm/14.97in in length, when it is stretched, its length measures about 64.5cm/25.4in. It is portable and easy to take with you when travelling. Special Design: Our golf grip trainer is made of quality steel and rubber, it is pretty sturdy and has a nice grip feel. The retractable design makes it easy to grasp the rhythm of the swing. Easy to Use: The golf trainer is easy to use, before you swing it's in a contracted state, then when you hit the sweet spot and swing correctly it will click into place. After the swing is finished, it will automatically contract. Wide Application: The golf grip training aid can be used for warm-up and indoor practice. It can improve your swing's rhythm, flexibility, speed and strength. It is also a best gift for beginners. Product Dimensions: Original size: 38 cm/14.97 inches Stretched size: 67.5 cm/26.5 inches Color: Black, Blue Material: Steel, Rubber Products Included: 1* Golf Telescopic Swing Vocal Trainer