I see luggage, handbags, purses, shoes, and jackets made out of ballistic nylon. But other times I hear the term Kevlar®, and I was wondering if Kevlar is a brand name type of ballistic nylon. My Tumi wallet, while more expensive than I would have liked was said to be able to stop a bullet. It certainly is extremely tough and I use the term ballistic nylon, but is that necessarily Kevlar, or vice versa?