Like replica swords, replica armour is also often too heavy. Especially maille (the correct term for chainmail). Proper maille has the rings riveted closed so y

Like replica swords, replica armour is also often too heavy. Especially maille (the correct term for chainmail). Proper maille has the rings riveted closed so you can use thin rings. Many cheap replicas use bent (butted) rings. They need to be thicker so they don't bend open. I have a full hauberk which goes to my knees with long sleeves. It weighs 6-ish kilo. Add a kilo for the coif. A decently made late medieval full plate armour is maybe 15-ish kilo complete with helmet. The heaviest armours are probably late 14th century armours. They are essentially an almost full plate over a (partial or full) maille hauberk. Some are maybe 25 kilo. That's still a lot less than the 40 or so kilo that modern soldiers lug around.