Linen Shirts instead of Synthetic or Cotton?

Good question - I would think linen might be preferrable to straight out cotton for the reasons you mentioned. I would still be concerned about skin irritation when the fabric is wet (which is one of the primary reasons I avoid cotton for innerwear)- I am curious what others think.

Had a pilgrim stay here last summer who was the earthy type, she made all her own clothing from linen. Her only drawback was the light-colored pieces turned yellow in the spots where it soaked up the most perspiration.

Two young nuns stayed here two years ago. The parts of their habits worn against their faces and shoulders were made of linen, because it does not chafe and it wears like iron, I was told. They, too, dealt with the sweat-turning-yellow problem, but if you use dark-colored shirts you have that one figured out already.

All of them said the clothing is very comfortable and durable. The first pilgrim had walked from Slovenia, and the sisters from France, so they knew what they were talking about.