I’m sorry, but the answer was a baby, hon. Hehe! I’m teasing. The actual answer is a shoe. This was part of an odd contract process found in Deuteronomy 25.
At any rate, the dude had an obligation and he didn’t do it, which was bad. However, this meant Boaz was now the eligible bachelor in the situation. He and Ruth got married, Naomi’s land was restored, they lived happily ever after, and the lovely couple had a son named ____.