bumGenius cloth diaper styles look pretty similar from the outside thanks to our patented butterfly closure system with stretchy tabs. This feature helps get a secure fit every time. Inside the diapers is where the real differences exist. So, let’s take a look inside bumGenius diapers to see what’s the same and what’s different between styles. Original Pocket Diaper 5.0 Our Original Pocket Diaper 5.0 is a pocket style diaper. Because it’s lined with smooth, stay-dry suede cloth, the lining pulls moisture away from baby’s skin. You will see an opening on the inside of the diaper by the back