Two Bags, One Habit: JJJJound and Porter Return to the Basics That Made Them

JJJJound and Porter are back for a fourth round, and this time the entire pitch rests on two bags nobody ever really stopped needing.

There is a particular kind of confidence that comes from a brand deciding, four times over, that the thing worth revisiting is a bag. Not a shoe. Not a jacket. A bag, and specifically the kind of bag that used to hang off a bike messenger’s shoulder or get crushed under a commuter’s arm on a crowded train platform. Justin Saunders built JJJJound out of a habit of noticing what already works, and the label’s ongoing relationship with Porter reads like a study in patience. First introduced in 2021 as a run of passport cases and travel accessories, the partnership has quietly become one of the more consistent threads in JJJJound’s calendar, resurfacing every year or two without ever needing to reinvent itself.

The new chapter, officially cataloged on JJJJound’s site as Porter Yoshida IV, drops the accessory format altogether and goes straight for the two carry shapes that defined an entire era of daily movement: the messenger bag and the backpack. According to JJJJound’s own project notes, the goal was to return both sil “to their original purpose,” stripped of anything that wasn’t doing real work.

 

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Anyone who has followed JJJJound’s collide with brands like New Balance, Diemme, or Salomon will recognize the throughline immediately. Saunders doesn’t chase novelty. He picks an object with a settled identity, one that already earned its place in daily life sometime in the late 1990s or early 2000s, and asks what it looks like with the branding turned down and the materials turned up.

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The lineup is deliberately narrow: one backpack, one messenger bag, both finished in black. That restraint is the entire point.

The backpack measures 360mm wide, 500mm tall, and 180mm deep, holding a 23 liter capacity at a listed weight of 1,135 grams. It’s built from waterproof ripstop nylon with a waterproof zipper running the main compartment, finished with a JJJJound metal plate, a Porter label, and a branded metal buckle. A small but telling detail carries over from the messenger bag as well: an elasticated reflective cord fitted with a custom logo molded toggle lace keeper, the kind of hardware that looks incidental until you notice how often it shows up across JJJJound’s other bag projects.

The messenger bag is the more compact of the two, sized at 305mm by 255mm by 120mm with an 8 liter capacity and a weight of 915 grams. It carries the same waterproof ripstop construction, the same metal plate and buckle treatment, and an adjustable strap built for the kind of all day cross body wear that made this shape a fixture of early 2000s commuting in the first place.

Both pieces are manufactured in Japan, a detail that matters more here than it might for other collaborations, given who is making them.

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Ripstop nylon isn’t a flashy material choice, and that’s exactly why JJJJound keeps returning to it. The fabric resists tearing along stress points, sheds water without needing a separate coating, and ages into a slightly matte, worn in look rather than cracking or peeling the way treated canvas eventually does. For two bags meant to survive actual daily use rather than sit on a shelf, that durability profile lines up with what Saunders has said, across interviews over the years, about designing for longevity rather than seasonal turnover.

There’s also a quieter argument buried in the timing. JJJJound’s 2026 output so far has leaned heavily on outdoor and utility sil, from the Diemme Movida hiking shoe to a run of New Balance models built around trail proportions. A pair of waterproof nylon bags fits that same register: gear built to handle weather and movement, not just foot traffic between a subway stop and a desk.

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Porter is the retail face most people know, but the company behind it, Yoshida & Co., has been operating under a much older set of rules. Founded in 1935 by Kichizo Yoshida, the Tokyo based manufacturer built its reputation on a single stated commitment: bags made entirely in Japan, stitched by hand where hand stitching still makes sense, under a company philosophy often translated as pouring one’s full spirit into a single needle pass. Yoshida launched the Porter label specifically in 1962, and in the decades since it has become the go to partner for brands looking for a bag collaboration with an actual manufacturing pedigree behind it, not just a logo swap.

That history explains why a JJJJound x Porter release reads differently than most streetwear bag collaborations. The “Made in Japan” line on the product page isn’t a marketing flourish. It’s the same standard Yoshida has held since before either of these two men were born, and it’s the reason the label keeps getting invited back into partnerships with names ranging from sacai to COMME des GARÇONS over the years.

 

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Porter Yoshida IV lands inside a busy stretch for the Montreal studio. Earlier in the year, JJJJound worked through a run of Special Projects entries including a New Balance 475, a project simply titled SOMETIMES, and the aforementioned Diemme Movida, each one following the same low key release rhythm: a project page goes live, images follow, and the product drops through JJJJound’s own site without much advance noise.

The Porter relationship stands apart from those partnerships in one respect. Where JJJJound’s footwear work tends to modify an existing silhouette, borrowing a shoe that already exists and adjusting its palette or materials, the bag collide with Porter function more like a joint manufacturing exercise. Porter brings four generations of construction knowledge to the table, and JJJJound brings a design sensibility built entirely around restraint. Neither party is asking the other to compromise. The messenger bag and backpack look, unmistakably, like JJJJound products, and they are built, unmistakably, like Porter products.

That combination is likely why the Porter line has outlasted most of JJJJound’s other recurring partnerships, now on its fourth outing since 2021 while plenty of other convincers from the same period have appeared once and moved on.

 

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JJJJound’s own Special Projects page lists Porter Yoshida IV as launching Thursday, July 23, at 9 AM Eastern through JJJJound.com. That timing lands late in the evening in Tokyo, and Japan market retailers and press outlets covering the release have circulated July 24 as the effective regional date, which lines up with when JJJJound’s own site notes that online sale orders begin shipping. Pricing for the backpack and messenger bag had not been posted publicly at the time of writing.

Given how quickly JJJJound’s bag collaborations have sold through in the past, particularly the earlier Porter capsules from 2021 and 2023, both pieces are expected to move fast once the site goes live. Those earlier drops, the original Porter Yoshida capsule and its 2021 follow up, both centered on travel accessories rather than full bags, which makes the jump to a backpack and messenger bag feel like a natural next step rather than a stretch. The 2023 edition, built around a cream canvas passport case and matching wallet, took a warmer, more archival approach to tincture. This fourth outing goes the other direction entirely, landing in a flat, unbroken black that puts the attention on stitching and hardware rather than any surface treatment.

That shift in palette also tracks with how JJJJound has been treating color across its 2026 lineup more broadly. Where earlier seasons leaned into the studio’s signature muted earth tones, tan, taupe, mushroom, and stone, recent releases including the New Balance 740N and the Diemme Movida have paired those tones with sharper black and off white options, giving retailers and buyers a more versatile range to choose from. The Porter bags landing in solid black fits that pattern, offering a piece that pairs as easily with the label’s outdoor leaning footwear as it does with its more tailored ready to wear.

For anyone tracking JJJJound’s release cadence, the timing also lines up with a broader midsummer push. Between the New Balance 740N in late June and this Porter drop in late July, the studio has kept a steady one project every few weeks rhythm through the middle of the year, a pace that has held fairly consistent since the spring.