I'm the first one to admit that I destroy cotton socks easily. After a few wears, I tend to poke toeholes through them.

The Dockers socks feel pretty light, but they're a polyester blend and for a big guy who sweats, I won't end up with stinky feet after a day in the office. The wash well and feel good on my feet. Better yet, they hold up well, and I'm glad I bought them and will probably buy the same set after other cotton ones fail.