Coolababy One Size Pocket diapers are only found on Ebay.  They are very affordable at roughly 6-10 dollars a piece.  Each comes with one or two inserts depending on the auction you win.  They come in 8 colors, shown in the first picture, and also in white and pink.  These are similar in form as many other one size diapers:  they have a 3 step rise, an adjustable waist controlled by snaps, and are made of a PUL outer with a microfleece stay dry liner.  They work just fine once they fit, but have not stood the test of time

 

Update- these diaper s delaminated months after having used them and had to be turned into swim diapers or thrown out.