[Artemisia] More Norman Garb Questions

[Tamar Black Sea]

Hi Again,

OK, I have been looking at the Bayeux Tapestry some more and noticed 
that some of the garb appears to have seams sewn in a contrasting thread 
color. Is this just a function of embroidery, or is this something they 
might have done in period? (It looks pretty spiffy).

I have a second highly technical question: What are those wrappy things 
with the straps around the legs? Does anyone know how to make these work?

I swear on a stack of Viking sagas that this is my last stupid question:

    Does anyone have any personal experience with wool tunics? Are they 
unbearably hot or is it possible to find a light and loose enough weave 
to be tolerable for hot/warm weather? Is a light, loose weave period?

Sorry for my ignorance but this is completely outside of my time, place 
and gender; I am doing some research for someone else.

Thank you all for your patience,

Tamar