Package Include: You will receive a piece of retractable golf aid, it is a wonderful swing trainer to practice and warm up before any game. 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.