As it says, length of a mail shirt for the given period, 15th C. I used to wear one many moons ago until I got plated up, and settled it around crotch level. bit of a lame question I suppose as I should know, but worth an ask to gauge opinion. Reason being or course, and theres always one, Ive been given a mail shirt that is very long and I'll be adjusting it to suit. Ta muchly in advance for any coherent musings!!
The secret of change is to focus all of your energy not on fighting the old, but on building the new. (Socrates)