Warm, comfy, and thick socks. Ordered XL for my size 13 feet, and actually found them to be a little bit big (they do fit up to size 15 after all). 6-12 size socks are always too small, so these were good socks for me, just had to pull them up a little bit so they don't bunch up in my boots around the ankles. Seem to be pretty durable. Washed them a few times already and haven't noticed any thinning or anything like I would see in big budget packs of socks from the local super store.