I don't know brand names or materials, but I have a pair of synthetic "heayweight" outer tights, and light-, mid-, and heavyweight inner tights, all without chamois. I was recently chatting with a runner acquaintance and we both remarked that we carefully chose individual tights, or certain combinations of inner and outer tights according to the ambient temperature, and/or wind. I also wear my cycling shorts, with chamois, over the long-legged tights.

Riding in wet weather is a special circumstance for me, because then I choose the tights in consideration of the outer plastic and somewhat stiff rainpants. Last week I overestimated my ride in the blizzard and cold temp (~ 19 F) by wearing two pairs of tights and the rainpants, and had some difficulty swinging my leg over the seat. I was pedalling slowly on the slippery road surfaces, so those restrictions were not too bad when I got underway.