The racket is made of strong carbon fiber which means it's more durable, stable and light. This will give you more power in ball control. The triplex shock absorption technology improves the firmness of the the tennis racket. The comfortable shock-absorbing non-slip handle reduces bad vibration when hitting the ball. High performance tennis cable makes thes elastic powerful, durable and resistent to impact. In order for the training device not to move, you can fill it with water, sand or both. Note: 1. This is a solo tennis racket training set only, there are no other decorations. 2. Due to different lighting and screen settings, the color of the item may differ slightly from the picture. 3. Due to manual measurement, please allow slight difference in dimension. What's in the box? 1 x Tennis racket 1 x Tennis ball 1 x Training device