Choose a brand that names its leather grade. Full-grain leather should age well...

https://star-wiki.win/index.php/Bellroy_Slim_Wallet_Review_for_Back_Pocket_Comfort

Choose a brand that names its leather grade. Full-grain leather should age well with use. Read the warranty for clear coverage terms, then check how initials are applied: stamped, engraved, or added another way. Product photos can help set expectations.