I ordered a 2-pack of the black GO mesh briefs a few months ago and they are by far my favorite pair of briefs. Very breathable, very comfortable.

I came back to order more, and discovered that both the black and white styles were sold out in my size. I had to settle for the blue package. The material itself is all the same, but I've discovered that the blue version doesn't have as much length down to the thigh area. They stop just after your package, whereas the black go on another 2 or 3 inches. I will be calling Jockey to return these items.