How do you get the toughie trousers in dragon quest 9?

In "Dragon Quest IX: Sentinels of the Starry Skies," you can obtain the Toughie Trousers by defeating the monster known as the Tough Guy, which can be found in the game’s post-game areas, specifically in the "Dusk" region of the game. After defeating the Tough Guy, you have a chance to receive the Toughie Trousers as a drop. Additionally, they can also be synthesized at a Alchemy Pot using specific materials.