It's a MyDiaper Original.
I think they are German.
They are available here in Australia via Paddingplus.
Ah right you are in the US... Not sure where you can get them.
I have tried them and find them wunderbar!
Very absorbent and I find the fit for me to be fabulous.
They have an all white one which I love as well and an animal print or something like that but I haven't yet tried that one.
If your in the US try the Tykables, they seem like a close match
Tykables Overnights are the ones shown in that picture.
I believe rearz out of Ontario sells those as well