I have merino stuff but this seem thinner and easier to layer. I read the reviews and some people find them itchy, otherwise good reviews overall. Uniqlo heat tech stuff is also polyester, as are most Dri-Fit or whatever gym gear.
Pants: https://www.anacondastores.com/clothing/mens-clothing/mens-t…
Used these in our trip to Queenstown, NZ last month. Did good job in keeper us warm and comfortable.