Fossil makes the most practical entry-level passport holder — proper leather, a slip pocket for boarding passes, card slots for travel currency and ID, and RFID blocking throughout. Slim enough to go in a jacket pocket or small bag without bulk. The leather wears in nicely over years of travel use rather than looking shabby.
Aspinal of London makes the most considered passport cover at this price — smooth leather in an extensive colour range, a card slot, a boarding pass pocket, and that satisfying weight that only proper leather provides. The interior is beautifully lined in contrast satin, and the brand's rose gold branding is subtle enough to feel like quality rather than advertisement.
Smythson's passport cover in their iconic Panama leather is the travel accessory that people who collect beautiful stationery and leather goods aspire to. The leather is featherlight but substantial, the card slots are correctly proportioned, and the range of colours includes the same Nile Blue and Rose that's been copied endlessly but never matched. The passport cover that makes airport security feel slightly more civilised.