Bum Genius 4.0 comes with a removable thin and thick insert, which can be used separately or together based on absorbancy needs.

Freetimes has the thick and thin inserts partially attached. The online description states the inserts "allow for customized absorbancy". How, if Freetimes' claim to fame is the attached inserts unlike the 4.0 stuffing?

Also, did you find the cut of the 4.0 or Freetimes in the way or uncomfortable for your infant's umbilical area?