Tracks in Winter

Any guesses what this is?

I was walking along a slick sidewalk, enjoying the fact I could actually walk on it, rather than having to slug through yet another snow drift or risk life and limb on the black ice they consider road, when I noticed the spirally print above.

It’s a footprint.

I know because there was a whole set of them marching along the sidewalk. Off hand I’d guess a man’s size 9.

Don’t see it?

That’s because whoever he was put the equivalent of tire chains over his shoes. It’s a set of springs that clamp onto the bottom of your shoe and supposedly give you good traction.

I wonder if they would fit on my truck.