if you ever feel like trying something else other then cotton, which is like the best, hemp fibers are awesome. been using the hemp for a couple months and it has replaced cotton as my #1 wicking material. it wicks better and provides a better flavor then cotton imo. it does however take some prep, like boiling and such but is well worth it. also last time I checked is only available in a kilo size which is pretty big and would last a life time, but it is really cheap.
Can you provide a link for the source?