Inner layer: suedecloth
How did I know? It was one tired night whereby I forgot to change her and by the time I realized and checked on the hemp insert - they were wet before but now turn dried! My dd was still wearing it when I checked the inserts. So, the liquid evaporated to show that this diaper in fact is breathable. If you don't believe you can try to check insert in PUL pocket to see the difference.
3) Very easy to use and wash too.
2) Longer time to dry than PUL pocket diaper
3) Will be hot for daytime (?)
(reduce the point simply because I personally don't like its bulkiness and it has nothing to do with the function of the diaper!) *wink*
Note: This review is based solely on my personal usage