I have a Thompson topcoat from J crew. Pretty sure its outer layer is fully wool, inner layer is some quilted material. I’ve worn it on some very cold and windy NYC days and its served me well. Going on 3 years now with now signs of wear. I got mine on sale at a factory outlet for like 200, i think new ones retail 300-400. For sizing im 6 ft 200 and the L fits very well, probably a bit more room in the shoulders than i need.