Depending on their fitness, a fighter wearing hauberk and chausses can run, lie, stand up, jump, do somersaults (or even cartwheels), and even swim wearing full armour.
en.wikipedia.org The couter was added to the hauberk to better protect the elbows, and splinted armour and the coat of plates provided increased protection for other areas.
en.wikipedia.org This imaginary armor set consists of mail hauberk, an open-faced helmet with a nasal (nose protection), and boiled leather armor about the arms and legs.
en.wikipedia.org A shirt made from mail is a hauberk if knee-length and a haubergeon if mid-thigh length.
en.wikipedia.org Single plates of metal armour were again used from the late 13th century on, to protect joints and shins, and these were worn over a mail hauberk.
en.wikipedia.org