I guess not, according to what everyone else seems to say, but I don't think corduroy is all that warm either. But my winter beater this year is a cheap beat up Aero halfbelt deluxe that is alpaca lined, and a size larger than I normally wear. It's been single digits all week, and I've been wearing chunky sweaters under it, and have been completely fine. I believe I could do the same in my bootlegger, which is lined in cotton drill, which is even less warm. Apart from shearling, I don't believe any of Aero's linings is particularly warm. It's less the lining, and more the insulation between the liner and the shell. Which, most 50's style jackets that Aero makes don't seem to have. Maybe the quilted rayon lining has a bit of insulation to it, but I haven't seeen that firsthand to know.