It's hard to tell once the diaper is already put together. You have to pull on the selvedge edge of the fabric to tell what is the wrong side. If you take a square cut of microfleece and pull on one side it will say one way, if you pull on another corner it will say the other side. Selvedge is important. There are so many different types of microfleece that it is really hard to tell. There are veloured microfleece, chamois microfleece, double sided microfleece, different manufacturers, on and on. There are microfleece fabrics that have been treated with DWR (Durable water repellant) and there are those that have not been treated. It is just so variable that it is really hard to say, unless you just say "it just depends on what she used".