Purpose of flap?

[edwardono]

https://www.ebay.com/itm/6-RARE-vintage-USA-MADE-hospital-institution-adult-cloth-diapers-size-SMALL/255243223379?hash=item3b6dae8153:g:tg0AAOSw305hxhKV&pageci=1623ec1b-5166-4a7a-b2b2-7822d60a05b4&redirect=mobile

 

Stay-Dri brief.  Fourth pic shows a flap extending from the top front of the brief.  I can't figure out what it's for.  Anyone have an idea?

 

Anyone worn one of these?  

 

Seller has several sizes for sale.  Different sizes have different pics showing additional information. I think the tag has a URL of www.staydrisystems.com, manufactured by Two Rivers Textiles, and some sizing information.  

[ValentinesStuff]

https://www.ebay.com/itm/255252850221?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818142055%26meid%3D8640c513b1c44ec09ebf84809f7f010f%26pid%3D101113%26rk%3D2%26rkt%3D12%26sd%3D255243223379%26itm%3D255252850221%26pmt%3D0%26noa%3D1%26pg%3D2563228%26algv%3DDefaultOrganicWeb&_trksid=p2563228.c101113.m2108

Pics 6 & 7 shows it folded out under the side flaps.

It doesn't seem to make any sense. 

 

I don't think I'd call these "vintage" as they appear to be post 2000. They also seem to have been alarmed, so that flap might have held the electronics.

 

https://patents.justia.com/assignee/fred-bergman-healthcare-pty-ltd 

Edited March 28, 2022 by ValentinesStuff
Added more info.

[edwardono]

I would agree they aren't vintage.  Seller also set a high value on them.

 

I think pic 7 right hand side, shows a side, but part of it is folded under.  I still think the flap starts at center top.  

 

 

[square_duck]

Might also be for inserts or boosters. Those things didn't work very well, If I remember correctly. The inner "fluff" is actually polyurathane ( ie plastic) which is non absorbant....why??? I have no clue..I would waste time or money on them...

[ValentinesStuff]

At $40 each, I wasn't going to.