Most have a very strong boot sole, the bottom part of a boot.

Then she heard the soft scrape of a boot sole on the hard deck.

See the leaves that have clung to his boot soles.

So why did Daniel feel like something the colonel wanted to scrape off his boot soles?

All I heard was the soft pad of my own boot soles.

He showed the red imprint of a boot sole on his side.

He heard the rasp of a boot sole on the stone behind him.

Now, he could see the corrugated tracks of his boot sole.

Then he felt the vibration through his boot soles and looked down.

That was a matter she'd have to attend to soon, new boot soles.