CAN YOU FIGURE IT OUT?

Once upon a time there lived a king. The king had a beautiful
daughter.

But there was a problem. Everything the princess touched would
melt.
No matter what; metal, wood, plastic-anything she touched would melt.
Because of this, men were afraid of her. Nobody would dare marry
her.

The king despaired. What could he do to help his daughter? He consulted
his wizards and magicians. One wizard told the king, "If your daughter
touches one thing that does not melt in her hands, she will be cured." The
king was overjoyed. The next day, he held a competition. Any man that
could bring his daughter an object that would not melt would marry her
and inherit the king's wealth.

Three young princes took up the challenge. The first prince brought
a very hard alloy of titanium. But alas, once the princess touched it, it
melted.

The prince went away sadly.

The second prince brought a huge diamond, thinking that diamond is
the hardest substance in the world and would not melt. But alas, once
the princess touched it, it melted.

He too was sent away disappointed.

The third prince approached. He told the princess, "Put your hand
in my pocket and feel what is in there." The princess did as she was
told, though she turned red. She felt something hard. She held it in her
hand.

And it did not melt!!!

The king was overjoyed. Everybody in the kingdom was overjoyed. And
the third prince married the princess and they both lived happily ever
after.

Question: What was the object in the prince's pants?

(Scroll down for the answer)