Losing your luggage can make or break a clothing nerd on vacation. If you’re resourceful, you work with what you have in your carry-on. But if you’re not, it means blowing all your travel money and returning from your trip a broken man. One such incident on a trip to Barcelona in 1989 launched A.P.C., and led founder Jean Touitou on a lifelong denim journey.

This year, as part of A.P.C.’s 30th anniversary, Touitou is bringing back the jeans that started it all — the Standard Jeans. He designed this first pair of raw denim jeans out of necessity when he could only find “badly washed” jeans in Barcelona. This rather high-waisted and straight-legged cut is very different from other models in the A.P.C. pantheon, but features the same classic A.P.C. red-line selvedge denim — a denim with a “recipe” so secret that two generations of Japanese weavers have stayed mum about it.

Available for $235 at A.P.C.