this might fit the bill for you- it’s definitely small- just a little larger than a credit card in size- 4.2″ x 2.9″
it’s also definitely light- 13 grams 
![[IMG]](https://web.archive.org/web/20170708104324im_/http://i83.photobucket.com/albums/j304/BIGSKYWRX/redgeweight.jpg)
it has three sleeves, I carry four cards, pack of steri-strips and some cash- holds that w/o any problem
![[IMG]](https://web.archive.org/web/20170708104324im_/http://i83.photobucket.com/albums/j304/BIGSKYWRX/redgeempty.jpg)
![[IMG]](https://web.archive.org/web/20170708104324im_/http://i83.photobucket.com/albums/j304/BIGSKYWRX/redgeloaded.jpg)
also has an ID sleeve on the opposite side, I carry my work ID w/ my driver’s license behind it
![[IMG]](https://web.archive.org/web/20170708104324im_/http://i83.photobucket.com/albums/j304/BIGSKYWRX/redgeid.jpg)
is it tough? I think so- it’s made out of a carbon fiber laminate that is used in sailing racing
http://raggededgegear.wordpress.com/2010/03/11/what-is-this-flexible-carbon-fiber-sailcloth-material/
all in all, a nice little minimalist wallet that should serve well for many years