You can use any insert in the diaper, from microfiber to prefolds. There's plenty of room as a pocket or a shell. AMP has some great hemp inserts that are trim and absorbent. To use it as an all-in-two stay dry, the Flip inserts actually fit in this as well.If you're looking for something a little different, you may want to consider the Duo. Sized options are available, as well as a version that's only an all-in-two. Right now I'm mainly carrying the one size, but I can add to my offering as interest and demand permits!
Disclaimer: I do carry AMP Diapers in my store. I received no monetary or material compensation for this post and the views are entirely my own. I purchased the AMP Diaper I currently use. Your own experiences with this diaper will depend on your diapering needs and the fit of the diaper on your child.