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 protect the lower legs, so they are also called shin guards. Due to the high antagonism of football matches, it is very common for players to be kicked to the calf. Physically speaking, shin guards are used to disperse and cushion the pressure and momentum exerted on the lower legs, so as to protect players.