Thinking about a briefcase that sticks with you for years? Look for full-grain...

https://bizzmarkblog.com/why-do-briefcase-corners-wear-out-first-understanding-abrasion-resistance-and-quality-factors/

Thinking about a briefcase that sticks with you for years? Look for full-grain vegetable-tanned leather—that’s the stuff that ages beautifully and gets better with time. And don’t overlook solid brass hardware; it holds up way better than cheap metal