Most of the ordinary socks in our daily life are the same, so there is no distinction between the left and right feet, and you can wear them casually.
However, in addition to the difference in material and design between many sports socks and ordinary socks, there is a big difference between the left and right feet. The sports socks that distinguish the left and right feet according to the foot shape are usually more durable, because the length of the five toes is different, and the connection surface between the heel and the ankle is also different. The uneven force on the point makes individual protruding parts easy to wear.
It's also easy to tell the difference between left and right feet, sports socks marked "L" are left socks, and "R" are right socks. Of course, if the outer packaging of sports socks does not distinguish between left and right feet, you don't need to pay too much attention when wearing them.
There is also a kind of five-finger socks that need to be distinguished from left and right, which can better improve the comfort of the feet, and can also better protect the toes and reduce certain friction during exercise.