About 8 years ago I found some wool socks at Sam's Club that were either 80 or 85% lambswool but were not heavy. They were about the same thickness as a pair of gym socks and that is just what I was looking for. Got them home and when I tried them on I was shocked! I expected the usual kinda scratchy/itchy but bearable almost uncomfortable feel I'd always gotten with the usual super heavy knitted looking grey socks with the red toe and top I'd always used. (Ever wonder why all the wool socks used to look like that?) Well, let me tell ya what....these lambswool socks were flat out the MOST COMFORTABLE, LUXURIOUS FEELING socks I'd ever worn!!!!! Made by Burlington. Can't tell you what the other 15 or 20% material was and I don't care. They were about $9 for a package of 4 and came in typical dress sock colors of grey, navy, brown and black all in one pack. I totally quit wearing cotton socks ever since. I wear the wool socks even in the summer unless I go without socks all together. They lasted about 3 times longer than my cotton socks used to last too!. I still have some of the first ones I bought (had to darn a few holes on some) and like I said, I wear them year round. I've bought some about every other year ever since since I liked them so much but the second year the wool % was down to 75%. The 4th or 5th year it was down to 40 or 45% and that's still where it's at if you can find them. Price had gone up to about $14 per 4 pack too. Less wool, more money and even with less than 50% wool they still call them "wool socks" go figure huh? Last year, the Sam's Club we go to didn't have them at all. I still use them and they are still super comfortable and warm but I'd sure like to find another good quality lambswool sock in the 12 to 15 dollar per 4 pack range. Most of the "sporting industry" wool socks run that much for ONE PAIR!!. Oh yea, the other great thing about the Burlington wool socks.... I've NEVER had them fall down or the elastic go bad. I detest stretchy/baggy socks that won't stay up.