Choose a brand that names its leather: full-grain leather can develop character...

https://wiki-nest.win/index.php/What_Are_the_Downsides_of_Filson_Bags_for_Everyday_Office_Use%3F

Choose a brand that names its leather: full-grain leather can develop character with use. Read the warranty before buying, then check how initials are applied, where they go, and whether they’re stamped or printed