Hidden PUL / Fleece info (aio's and hf's)

So let's talk AIO'S,  Hybrids and hidden layers: 

Sometimes people are confused by the multitude of variations in cloth diapers.  This is completely understandable. 

So an all in one (aio) is a fitted diaper with PUL attached to the outside of the diaper.  This is done so you don't have to use a cover, cuz its attached.  Now PUL comes in many wonderful prints and makes the diaper cute and attractive.  But some moms aren't a big fan of the feel of pul or just found a super cute print in another fabric.  So they cover the outside of the pul, this makes the pul hidden.  Its still an AIO weather your pul is hidden. Or not. 
Read more about AIO'S here

Hybrid Fitted's are much like an aio in function.  A Hybrid is a diaper with water resistant fleece on the outside so that you don't need a cover (most of the time).   If your "fitted" has water resistant fleece then it is an HF and not a fitted.  They are generally constructed differently too.  Now much like AIO'S sometimes a mom wants a different fabric on the outside and not the fleece.  Most common reasons being they want a certain print or don't like how fleece pils.  So the fleece is covered by the decorative outer and the fleece is hidden. 

Read more about HF's here 

Just to be clear AIO and HF doesn't imply that there is a hidden layer.  Hiding the pul or fleece is a completely optional choice.  Below is a photo showing two diapers.  On the left monkey is in an HF with hidden fleece.  On the right the fleece is not hidden .