The second item you linked is a dual-layer: one layer is 100% man-made, the other layer is a mix of wool and man-made. They are warm and cozy (I had some) similar to Duofold in that sense, but I prefer 100% wool.

Terramar is not a "wool only" company, in fact this is the first time I've seen 100% wool from them.

I've never been disappointed in any of my Terramar, other than it wasn't 100% wool.