•We realize that many children (over 3 years old) have experienced a sharp decline in sports, they lack the ability to judge things, and most children are in contact with electronic products at birth, so some children are addicted to the temptation of some online games/videos, resulting in many Children have short-sightedness/improper sitting posture/low exercise volume when they are young.
•Considering that the children's strength is not so great, we design this racket which is lighter than the metal racket so that the children will use it for a longer time.
•We studied the wrist-to-ankle distance data of children over 3 years old and found that the 17-inch racket is more suitable for them. The distance from Wrist to Ankle should match the racket length to make them play more effortlessly.