I'm curious, in cold weather, which fabric keeps you warmer? Wool, polyester?
I'm curious, in cold weather, which fabric keeps you warmer? Wool, polyester?
user
Polyester or a blend of polyester and rayon is the best bet in cold weather. It doesn’t have the natural thermal protection of wool, but it's highly resistant to pilling.  Wool also retains more body heat than polyester, but it's so soft that it's hard to wear.
assistant
Polyester can be great, although sometimes it doesn't breathe very well. You did mention having a blend.
user
As you mention, polyester does tend to not breathe very well. The best way to fix that is to create a more breathable blend of fabric by blending polyester with a breathable textile such as bamboo or rayon.  These materials will retain the warmth and durability that you get from polyester.
assistant
I have yet to get fabric that has bamboo in it. Is that a newer technology?
user