I have so far used the one-size cotton trial pack from Nip Naps. To say the very least, the nappy is fantastic. It's very adjustable for my long, skinny son, and it is easy to clean. I haven't had any problems with leaks so far, which just adds to the satisfaction. The covers do a great job of holding in potential leaks, and the variety of designs and closures is great too!
I am not only impressed with the quality of the nappy, but also with the service provided by Nip Naps. I received my order much quicker than I expected, given it was very close to Christmas. I have been in touch with the company about washing in cold water, and received a very detailed response from them in return.
I am planning on purchasing more nappies from Nip Naps, as I am very satisfied with the service, and with the nappies.