These are thicker rulers than flexible ones, but not what I would call "thick". They are slightly thicker than flexible. I like that the measurement starts right at the edge, although that was my requirement. It's a very good deal to get so many rulers at this price point, although I would argue that all but the 12" and 6" are a gimmick and I don't see them being used. The numbers are easy to read. I also like that it's metric on one side and imperial on the other, although that was another request of mine. I don't know what the mustache logo means and I find it a bit childish.