Cotton *cloth* is known around the Eastern Mediterranean in some quantity for the tenth century, but eve at the end of the eleventh century was still an expensive elite fabric.
It was expense and valued for three reasons:
1- cotton is much more difficult to harvest, process and spin by manual means that any other fibre.
2- It is much softer than linen and wool.
3- It takes dye very well and so, like silk, it can be made into the very bright colours that earlier medieval fashions valued.
Reasons two and three are why its early use was predominantly for headscarves, napkins and towels.
The general ban in it being *worn* by people doing N-W European re-enactment prior to the C17th is entirely fitting, and especially so for Britain which was a cultural and technological backwater through most of the period.
> The ''chickensuit'' is actually a leather lamellar;
No, it is a ghastly abortion that bears no resemblance to any historical precedent. Oops, sorry, I mean – he must be very new and deserves an E for effort. Shame that effort did not go into any research. The construction used is not even the old Osprey one, which, however wrong, is at least easily accessible.
> as Lamellar is used by a LOT of groups
Yes, and it damn well shouldn’t be. There is NO solid evidence for lamellar being used widely in North-Western Europe. *Don’t* mention Birka and Wisby – Birka was not even one full corselet, and the Wisby lamellar probably came to western Europe as a disintegrating jumble of plates, which is why it became a brigandine.
Gerald of Wales Quote:
They were warlike figures, clad in mail in every part of their body after the Danish manner. Some wore long coats of mail, others iron plates skilfully knitted together,
> Could this be Lamellar?
Could be anything, but much more likely to be scale.