guide · japanese denim · raw denim · selvedge ·Jun 22, 2026

Button Fly vs Zipper Jeans: Which Is Better for Raw Denim? (2026)

Q: Why do Japanese denim brands use button flies?

Mainly for vintage authenticity, since pre-war and mid-century Levi's used them, and for durability, because buttons have no moving parts to break or corrode.

For raw selvedge denim, a button fly is generally the better choice: it is more durable, more vintage-authentic, and never suffers zipper failure, which is why most premium Japanese brands use it — while a zipper fly offers speed and convenience at the cost of a part that can break and corrode over a garment's long life. The right pick comes down to how much you value heritage and longevity versus everyday convenience.

Button Fly vs Zipper: What's the Difference?

The fly is the closure at the front of your jeans. A button fly uses a vertical row of (usually four or five) metal buttons hidden behind a placket. A zipper fly uses a single metal or synthetic zipper. Both do the same job, but they differ in durability, authenticity, and convenience — and on raw denim built to last decades, those differences matter more than on disposable fast-fashion jeans.

Most premium Japanese selvedge brands default to the button fly because it matches vintage Levi's construction and has no failure-prone moving parts.

History and Background

The button fly is the original. Levi's used button flies from 1873, and they remained standard for decades. The zipper fly arrived later: Levi's introduced the zippered 501's sibling, the 505, in 1967 to satisfy customers who wanted modern convenience. The button-fly 501 remained the heritage icon.

When Japanese brands began reproducing vintage Americana in the 1980s, they overwhelmingly chose the button fly to stay faithful to pre-war and mid-century originals. At Japan-Denim.com, we see the button fly as part of the authentic raw-denim experience, though we recognize the zipper has a practical appeal for some wearers.

Deep Dive: Pros and Cons

Durability: The button fly wins. Buttons have no moving parts to break, jam, or corrode, and an individual button is trivial to replace. A zipper, by contrast, is the single most failure-prone component on a pair of jeans — and on raw denim meant to last 10-plus years, a broken zipper is a real concern, especially since indigo and washing can corrode cheaper zippers.

Authenticity and fades: The button fly is more vintage-accurate, and the buttons themselves fade and patina with age, developing a worn brass character. Button-fly plackets also create their own subtle fade lines.

Convenience: Here the zipper wins. It is faster to fasten and unfasten, which some wearers strongly prefer. The button fly takes a few extra seconds and can feel fiddly at first, though it becomes second nature quickly.

At Japan-Denim.com, we tell US buyers: if you are buying premium raw denim to wear for years and chase fades, the button fly is the natural choice. If you prioritize day-to-day speed above all, a quality zipper fly is perfectly fine — just choose jeans with a reputable zipper brand.

Diagram comparing a button fly and zipper fly on selvedge denim jeans — A button fly has no moving parts to fail; a zipper fly trades durability for everyday speed.

Best Options: Button Fly and Zipper Picks

Momotaro 0701 (Button Fly)

Best for: Classic vintage-authentic button-fly selvedge
Key specs: Button fly, 15.7oz unsanforized selvedge, slim-tapered
Price range: $220–$290 USD
Why we recommend it: A faithful button fly with premium construction and beautiful fades.

Iron Heart IH-666s (Button Fly)

Best for: Heavyweight, indestructible button-fly jeans
Key specs: Button fly, 21oz sanforized selvedge, slim-straight
Price range: $320–$390 USD
Why we recommend it: Bombproof construction with a durable button fly that suits the brand's tank-like ethos.

Japan Blue / Zippered Models

Best for: Buyers who prefer the convenience of a quality zipper
Key specs: YKK or quality zipper fly, ~14oz–15oz selvedge, various fits
Price range: $180–$260 USD
Why we recommend it: Several Japanese makers offer zippered models with reliable zippers for those who want speed without sacrificing selvedge fabric.

Factor	Button Fly	Zipper Fly
Durability	Excellent (no moving parts)	Lower (can break/corrode)
Authenticity	Vintage-accurate	Modern (post-1967)
Convenience	Slower	Faster
Repairability	Easy (replace a button)	Harder (replace zipper)
Best for	Long-term raw denim	Everyday convenience

Button fly and zipper Japanese selvedge denim jeans compared side by side in indigo tones — Most premium Japanese selvedge uses a vintage-authentic button fly, though quality zippered models exist.

Frequently Asked Questions

Q: Is a button fly or zipper better for jeans?
A: For raw selvedge denim meant to last, a button fly is generally better — it is more durable, vintage-authentic, and easily repaired. A zipper is more convenient day-to-day but is the most failure-prone part of a pair of jeans.

Q: Why do Japanese denim brands use button flies?
A: Japanese brands use button flies mainly for vintage authenticity, since pre-war and mid-century Levi's used them, and for durability, because buttons have no moving parts to break or corrode.

Q: Do button flies break less than zippers?
A: Yes. Buttons have no mechanism to jam or fail, and a single button is easy to replace. Zippers can break, jam, or corrode — a real concern on raw denim worn and washed over many years.

Q: Are button-fly jeans harder to use?
A: They take a few extra seconds and can feel fiddly at first, but most wearers adjust quickly. The trade-off is greater durability and a more authentic vintage experience.

Q: When did zipper jeans become common?
A: Zipper flies became common after Levi's introduced the zippered 505 in 1967. Button flies, used since 1873, remained the heritage standard, which is why repro brands favor them.

Q: Can I get selvedge denim with a zipper?
A: Yes. While most premium Japanese selvedge uses a button fly, several brands offer zippered models with quality zippers for buyers who prefer the convenience.

The Bottom Line

For raw selvedge denim built to last and fade for years, the button fly is the better choice — durable, repairable, and vintage-authentic, which is exactly why most premium Japanese brands use it. Choose a zipper fly only if everyday speed matters more to you than longevity and heritage, and if so, pick jeans with a reputable zipper.

At Japan-Denim.com, the majority of our selvedge is button-fly for good reason. Explore our raw denim collection to find vintage-authentic jeans built to outlast their wearers.