That's the first thing I noticed. That is just wrong to be standing on gel with heels.
That's why my #1 selling sticker is this:
http://www.havasudoug.com/ccp51/medi...reFeetOnly.gif
Bare Feet Only (http://www.havasudoug.com/cgi-bin/cc...y&cat=&catstr=)
I've sold 8 so far today. They are cut vinyl available in many colors.