hi jerrie,

just a hunch

Crinkled patent flat with a ruched leather toe and hidden inner wedge on a flexible rubber Chic pointy shoes with sculptured 1/2″ heel, polished leather ...
patent-best.info/feed/

FootSmart Fitright Two-Way Shoe Stretcher When shoes don't fit as they should, ...... The adjustable inner wedge allows you to customize the fit. ...
www.footcaremart.com/footsmart.html

hope it helps

--------------------------------------------------
Note added at 40 mins (2007-07-13 10:50:39 GMT)
--------------------------------------------------

check this funky piece of footwear - complete with inner wedge!

Spanish footwear brand Camper has just launched a new line for women in the city. Mimosa reinvents the sports shoes of the last century. Soft pastel shades, curvy heels, materials and sporty detail like buckles and laces all make for a supremely retro feel.
But Mimosa is not just a nifty design. As in all its collections, Camper has paid special attention to comfort and the addition of a 7mm inner wedge makes you feel as if you are walking on air.
http://www.fashionfromspain.com/icex/cda/controller/pageGen/...