Ok kiddo, so imagine that you have a shield to protect yourself from bad guys, right? But sometimes the shield on its own is not enough, so you need something else to wear to keep you safe. That's where the buff coat comes in.
A buff coat is a type of clothing that is made to protect someone from getting hurt. It's called a buff coat because it's usually made from a type of leather called buff leather. Buff leather is really strong and thick, which means it can stand up to all kinds of things that might hurt you, like swords or arrows.
A buff coat is kind of like a jacket, but it covers your whole body and comes down to your knees or even your ankles. It can be pretty heavy and it's not very comfortable to wear, but it does a really good job of keeping you safe.
People used to wear buff coats a lot back in the old days when they were fighting battles, because they didn't have better ways to protect themselves. Nowadays, people don't wear buff coats as much, because we have better ways to protect ourselves, like really strong armor or special materials that can stop bullets.
But even though we don't wear buff coats much anymore, they're still really cool to learn about and imagine what it must have been like to wear one and be a brave warrior!