I am in love with these clutch purse wallet bags.  I got mine just over two years ago (In the Skull Triangle "Roses" pattern) when I made my first order with the workshop, to see what kind of quality I could expect from them, and these little bags really blew me away (and incidentally did a lot to sell me on the partnership).
 
These are sturdy, more roomy than you expect them to be, and the zipper! Ye gods! A proper strong metal zipper, in this day and age!
 
There are 8 card slots (4 on each side) plus a central zipped pouch for coins and stuff, plus dividers for keeping your essentials organised.  When I go out, I use it for money, cards, my ID card, shopping lists, receipts AND my big clunky phone. The wrist strap is sturdy and well attached: you seriously never have to worry about it snapping, even if you swing it around all day and night. (It is not detatchable. That thing is on there.) 
 
(This is actually still the bag I use every day when I'm on the go. They will last forever.)
 
A perfect thing with gorgeously strong stitching, just amazing quality.  Large enough to carry everything you need (except your keys), small enough not to be a burden. Perfect for when you want a little something more than, say, a snap purse phone wallet, but something less than a bag-sized bag.
 
Here's some more (actually useful) technical information:
 
Total 8 card slots, 1 zipper pocket, 1 phone pocket and 2 full length pockets for cash, shopping lists, and other stuff.
Single zippered top closure, easy to open and close.
Size (in inches): 4.13"(H) x 1.02"(W) x 8.31"(L)
Insanely useful and awesome. Astounding quality. Even over two years since I got one in another design, these little bags still fill me with huge delight.