Hello! I know this is a year later but I just found this. That is indeed Dare Devil. My old coach is the creator of the leos (Tami Carney, married to John Carney, OSU's assistant gymnastics coach). It used to be the two d's as the logos, but now she only does one D (as most of you have figured out). I don't know if she still makes leos for workouts as I have lost touch with her, but I know she still makes competitive leos for OSU and a few other colleges. You can probably find a lot of her old leos still floating around though, especially in the Seattle area, because I know a lot of my old teammates and I have handed them down or sold them at consignments. If she still is making these leos, I remember them being pretty pricey. I remember she would sell them at my gym way back, and if you knew her she'd give them to you for a lot cheaper. (One time she was even kind enough to give my sister and I a bunch of old scrunchies with these leos, since she does make everything herself).
Hope this helped, even if it is a year later!