BRANWYN's new Essential Supreme Bra solves the separation problem, without an underwire
Two years of engineering went into knitting shape directly into the fabric, no wires or seams required
BRANWYN — the Oregon-based, women-owned Merino innerwear brand we've covered before on TAK — has just launched the Essential Supreme Bra ($78), its most technically ambitious bra to date.
The brief came directly from customers; they wanted natural separation without underwires, and without giving up the seamless, second-skin feel BRANWYN is known for.
Sounds simple, right? The problem was that the knitting technology to do it didn't exist, so BRANWYN spent two years developing it.
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What makes it different
The key innovation is the seamless scrunch construction, which is knit directly into the GLDNspun 4-way fabric using tension mapping to create wire-free shape and separation.
There's no additional structure, no seams doing the heavy lifting, and nothing that digs in over time; the separation comes from how the fabric itself is engineered. BRANWYN calls it knit-engineered tension mapping, and it's a genuinely different approach to a problem most bra brands solve with hardware.
The removable bra pads are OEKO-TEX Standard 100 certified, meaning they've been tested against a list of harmful substances, and the straps are convertible, so you can wear them straight or crossed in the back depending on what you need from the fit that day.
The fabric composition is the same as across the broader BRANWYN Essential range: 81% extra fine ZQRX Merino wool, 14% nylon, and 5% Spandex.
Merino does the temperature regulation and moisture management, nylon adds durability, and Spandex gives the four-way stretch that makes seamless Merino actually work as activewear. The ZQRX wool is also regeneratively farmed, and the whole bra is third-party certified BPA-free, PFAs-free, and free of forever chemicals; a level of transparency that's still surprisingly rare in performance apparel.
CEO Deanne Buck put it plainly:
"We iterated for two years to create natural separation without sacrificing the seamless feel our community loves. By evolving how we design with a natural fiber, ZQRX Merino wool, we were able to knit that experience directly into the garment."
What it's built for (and what it isn't)
This is worth being clear about: the Essential Supreme is not a high-impact running bra.
BRANWYN positions it for light activity and everyday wear including (but not limited to) active recovery, stretching, walking, travel, rest days around training.
If you're looking for something to wear on a longer run with significant bounce, their Essential Racerback Sports Bra is the better fit, and our best sports bras for running guide covers the full range of options for different impact levels and chest sizes.
But for everything around the run (the cooldown walk, the yoga session, the recovery day when you still want to feel put-together) the Supreme's combination of Merino temperature regulation, wire-free comfort, and genuine shape is a compelling package.
Care notes
BRANWYN recommends placing it in a mesh laundry bag and running it on a delicate cold cycle with wool-friendly detergent, then laying flat to dry. Remove the bra pads before washing. It's a bit more involved than throwing it in with your running kit, but straightforward enough for day-to-day.
Colorways and availability
Available at launch in Black and Luna Grey, in sizes S through XXL. The neutral palette is intentional; these are innerwear-first pieces designed to disappear under whatever you're wearing. Additional colorways may follow; check branwyn.com for current availability.
The BRANWYN Essential Supreme Bra is available now at $78 at branwyn.com.
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