That's a good questions. Before I became a corportate sell-out, i used to rock a lot of Ecko gear. I think most fighters just have the logo printed on their shorts.
http://www.budovideos.com/shop/customer/product.php?productid=24130 http://www.mmaoverload.com/nogi-echo-fight-shorts.html
I think the TS is talking about Ecko as in Ecko Ulmtd/Mark Ecko and not nogi echo, could be wrong though.
I'd guess because as someone already posted,NOGI used to sell a style of shorts called Echos before their current Grill and Bone shorts.And perhaps because the TS wrote Echo not Ecko is also confusing.My first thought when I saw the title was for NOGI shorts as I tend to asociate this brand more with MMA than Ecko which tends to be the choice of spotty gansta teenage wannabes over here from whom I see wearing it....
We still have some Echo's in stock, but admittedly there are only a few sizes left (28, 34, 38, & 40).