I must be really backward.I have never heard or seen these. What are they suppose to do?
On long rides,the out side of my foot ( little toe) tends to start to hurt from my weight in the saddle and that edge of my foot pressing outward. I probably tend to use more weight in the stirrup than most, as I ride a lot of rough country hunting. Going up hills isn't a problem. Coming down is.
Or it might be that sometimes I have pack animals that think they need to do some thing else, and I have to dally to pull them along and then I must counter balance with my foot to keep the saddle in place.
I can't use them anyway as I have the STI breakaway stirrups that cannot be fitted with these.
Interesting though and I'm always ready to learn more things. How about explaining them?