Wool? How about sleazy elastic?  I bought these for an elderly friend who, in order to wear the first pair, had to cut through all the layers of elastic with a seam ripper in order to prevent the socks from leaving compression marks on her ankles. They are junk. I found some real wool socks at a neighborhood store, and pitched these pseudo wool pairs. The listing says wool 35% , cotton 24%, polyester 36% and spandex 5%. Regret I didn't do the math: I was foolish enough to trust Amazon. The headline is flat-out deceptive and Amazon has no excuse for not knowing it. Thirty-five percent wool means they are, at most, a "wool blend." Thick? I have jogging socks lined with a thin layer of terry that are fluffy bunny slippers compared to these. Warm? Not as warm as any basic all-cotton sock. I am a professional copywriter and whoever wrote this product description is not. Amazon, I refer you to the Wool Products Labeling Act of 1939. You people should know this stuff. And I know you won't have the courage to post this.