The Adult Baby/Diaper Lover (AB/DL) pride flag is a proposed symbol for free use by members of adult baby/diaper lover fetish community. It was created in 2005 by David of ABDLScandinavia.com.
"The purpose of the flag is to display pride over and sympathy with the ABDL community. It can be used as an ordinary flag, being sewn onto clothes, made in pin-form to be worn at the coat collar or just decorate the living room wall. Feel free to display it publicly.

It is designed to somewhat resemble of the common symbol of the ABDL community - diapers - in a tasteful and not too obvious way. It mostly consist of white and light colors, an obvious choice since those are the most associated with diapers."
http://www.abdlscandinavia.com/abdlflag/index.html#creation
David of ABDL Scandinavia