How did guys stay cool and stylish back in the 1940s? The following images from a 1948 "Look" magazine (64 years ago, when the "Bold Look" officially began) answers that question. And interestingly enough there was a bit of a debate about it.
click images to enlarge
Article Page 1:
Article Page 2:
Article Page 3:
Article Page 4:
Article Page 5, the "Aztec" inspired clothing is rather wild:
Article Page 6, I'll take one of everything, please:
Where do I stand in the debate about summer material? Do I prefer loosely woven fabrics or light-weight tightly woven fabrics for warm weather?
I like loosely woven materials, like linen. I find that allowing air to flow through a garment makes it much cooler than a light-weight tightly woven material. For example, I have a heavy-weight three-piece tweed suit that is super warm in the winter. Even so, its tweed material is surprisingly loosely woven and at times will allow a gust of wind to cut through.
Your experience may differ along with your preference, but that has been my observation.