Pros: Retains plumpness/puffiness/breathability
Cons: A lot of molting going on.
For the record, the exact fabric content of these sox is: 55% acrylic, 24% wool, 11% nylon, 7% polyester, 2%rubber, 1% spandex. Even though they say "Wool" on the tag (see pix) I've worn these socks about 4-5 times. Really like how the sock retains it's puffiness and you can feel yourself separated from the insoles of the shoes cause they are so plump. These are the kind of socks you wear with shoes that fit you a little loose.
Paid $9/pair on sale, but the MSRP is $14.
However, the bottom of the socks is starting to molt fabric. Don't know if it'll get any worse, but the socks are still puffy. Maybe I'll report back after more wearings. I bought 2 pair and I have not used the lighter colored one.