As there is no underwiring this nursing bra is ultra comfortable and will give you a feeling of well being while nursing non underwired nursing bra foam padded cups for a padded effect adjustable straps the practical nursing cups on this bra open quickly thanks to a special clip fastening system on the straps 3 position double hook back fastening for b and c cups 4 position triple hook back fastening for d e and f cups what you need to know tip take your measurement at the end of