My narrow, low-volume, long arch feet mean I sometimes end up with footwear that could benefit from inserts. Also, some foot pain issues I have seem to benefit from inserts at times.
My question is: "What inserts help to keep footwear from feeling warmer?"
Rubber/plastic/acrylic don't seem great...
Thick pieces of leather? Could I just buy some veg-tanned stuff and trim it to size?
Some people claim wool (as in felt) keeps feet warm in winter and cool in summer, is this true?
What about cork?
Some type of thick cotton?