Leg guards, that is, a tool to protect the legs from injury in daily life (especially in sports). Nowadays, it is common to make a protective cover for the leg, which is comfortable, breathable and easy to wear and take off. Sports equipment used by baseball, softball and other athletes to protect their calves. There is also a semicircle tube shaped protective gear that is sleeved on the shin of the horse. Used in polo matches to prevent horses from being hurt by polo or ball crutches.

Leg guards are generally rigid plates, which can disperse the force exerted by the opposite leg and shoes. In addition, the gap between the leg guards and the legs can play a buffer role, and the skin between the leg bones and the leg guards can also play a buffer role to prevent fractures.