What is it in my shoes that makes that squeaky sound when I walk?

It’s the rubber, leather, etc. Colder weather makes things less flexible, squeak squeak.

ahhhhh, wow, thanks :)

the sown in finger of a chinese girl…

Pinch your index finger and your thumb together, hard. Now slide them against against each other, slowly. Notice how the skin surface of the two fingers grabs, then slips, grabs again, slips again, etc. (provided you haven’t used some kind of moisturizer)? If you were to speed that grab-and-slip vibration up enough, you would generate a tonal frequency that would be heard as a squeak. This is what is happening somewhere in the shoe, as two leather surfaces are sliding against each other under pressure. The most likely area in a laced shoe is around the tongue, where the edges of the tongue are overlapped by the lace eyelets.

Most top-grain shoe leather is waxed at the factory, and then again whenever we polish our shoes. In warm weather, the wax softens and acts as a lubricant between the leather surfaces to keep them from squeaking (kind of like moisturizer on your hands). But wax is very temperature sensitive and hardens radically in cold weather. The hardened wax actually increases the grabbiness of the surface, making it squeakier.

Everyone above answered it pretty well, but I just wanted to say that sometimes water/moisture can make boots/shoes squeak. When I wear my sneakers outside when it’s wet, the water will get into the rubber spaces along the bottom of my shoe and squeak.

First I thought it was the same lemming from here