Go here..........

http://sheldonbrown.com/harris/pedals.html

............and scroll down to the MKS GR-9 pedals.

I have these on my Long Haul Trucker and they are great! Toe-clip pedals always want to hang upside-down, because of the weight of the aluminum toe clip. The little triangular tab that you see lets you "wipe" your foot across the pedal from front to rear, and the pedal flips over right-side-up so you can slip your foot into the clip.

I have large feet - size 13 to 14 depending on the fit of the shoe. I have the XL size toe clips from the same web page. The only problem I've found is getting straps long enough. I think eventually I'll take a set of the leather straps I bought that are too short to a harness shop or shoe-repair place and have them custom-make a strap that's long enough.