Lately, I am really into the wool socks as I find them to be more comfortable and softer than cotton socks. I bought both the vintage solid socks and the owl socks. I don't find either of these socks to be what I would consider to be thick or very warm since I have others that are much thicker. As for warmth, I don't think any of the "wool" socks are overly warm as all of them are made from blends of different fibers which include cotton, spandex, wool from different source, etc. Both of the socks that I bought are soft and fit well. The length is about to just under the calf which is a good length for me. The elastic at the top isn't a problem for me, but it may make lines on the legs of someone that has a problem with water retention or diabetes. They do make lines on my legs, but this is only something that I noticed and not anything that I feel. For both sets of socks that I got, I like the variety of color as I try to match the colors of my t-shirts and shoes. Overall, I am very happy with both sets of socks.

UPDATE 6/17/18
I like these socks so much that I bought another set of them. As mentioned previously, they are not at all heavy and can be used in any season. They are soft and very comfortable, and, so far, there has been no shrinkage in the laundry, I don't give them any special treatment, and wash them with my regular laundry, I am still very happy with these socks and would recommend them.