Summary: With a small band and large cup size, it’s been impossible to find a comfortable, non-underwire bra that supports my breasts, feels good to wear all day, and looks cute. But the Revolution Bras from Knix tick all of those boxes and more! Designed using buttery-soft material and made for cup sizes ranging from 30A–44G, Knix is revolutionizing intimates by creating a bra that we will actually love as much as our favorite pair of yoga pants. 

Pros:

  • The bras come in a wide spectrum of sizes, with five hook closures to give you some wiggle room for the normal, hormonal breast fluctuations so many women experience (hello period boobs!).
  • The material is light, stretchy, and buttery smooth, providing enough stretch to move with you while remaining comfortably snug –– never as tight as a sports bra!
  • At under $60 per bra, these pieces are reasonably priced for the market, and totally worth the investment when you find yourself wearing them every day!

Cons:

  • The bras are sized based on an XS–XXXXL model with variations that coordinate to your measurements –– so finding the right size to order might take a little trial and error. But, when in doubt, Knix has virtual fit experts who can help you find the right fit

Like most women, my breast size has fluctuated over the years, though they have always been between a 30 or 32 band and a D–H cup for my entire adult life. Standing at just under five foot two, this is a fairly substantial proportion of my body. Buying bras from the shops my friends liked usually involved me having to compromise on the band or cup size to find something that could sort of work. The only bras that were made to actually support me had huge, industrial-strength straps in old-fashioned designs that cost $100 or more a pop. 

“Buying bras from the shops my friends liked usually involved me having to compromise on the band or cup size to find something that could sort of work.”

Above a certain size, underwire was a non-negotiable. A “bralette” was as useless to me as a pocket with a hole in it. Because I hate the feeling of underboob (iykyk), I resigned myself to bras that were too tight, shoving my cleavage to my collarbone and pushing the sides of my breasts out into my armpits, all in the name of “support.” I let go of my visions of cute, dainty underthings I could prance around the house in, let alone something comfortable. While I could give Jessica Rabbit a run for her money, it seemed like in the off-hours I’d be layering up on sports bras for the times I wanted to be “comfy.” 

And then the bra industry seemed to wake up to the fact that women like me existed. Sometime around 2015, I remember seeing my first 32D in a big box store. After over a decade of trying to force the readymade bras to work on my body with all the stubborn determination of Cinderella’s stepsisters stuffing their feet into her tiny glass slipper, this was nothing short of a revelation. Finally, small bands and big cups were showing up around the internet, and even better? Brands were trying to crack the no underwire code for women for whom such a thing had always been as effective as trying to holster pomelos in a string bikini. One of those brands was Knix. 

Introducing Knix, a revolution for women’s underwear

Founded in 2013 by Joanna Griffiths, Knix launched with the bold vision to revolutionize intimates by prioritizing function and comfort, redefining an industry that was once built on notions of restriction. The brand introduced the first pair of Leakproof period underwear that year, and has gone on to create a number of products that meet real people’s needs with innovations that enhance everyday comfort. And their Revolution Bra is exactly that. 

“Founded in 2013 by Joanna Griffiths, Knix launched with the bold vision to revolutionize intimates by prioritizing function and comfort, redefining the possibilities of the industry that was once built on notions of restriction.”

This bra is well, exactly what its name describes: A revolution in all the qualities people with bigger busts both want and need in a bra. Combining comfort with support is no easy task, and add to that buttery soft material that is smoothing, too? In a design that is actually pretty? I couldn’t wait to get my hands on these babies. 

I’d never found a wireless bra that didn’t function essentially like a pullover sports bra, providing “support” in the style of a panini press: Yes, my boobs were technically being held up, but an hour or two later I’d be tearing it off like a Victorian woman whose corset had given her the vapors. As a writer who works from home and lives in loungewear, I was dying for a bra that could feel good and support my boobs without just smashing them together. Had Knix cracked the code? 

My experience trying Knix

I ordered the Revolution V-Neck Bra in rose water and the Astrology Collection in Scorpio; the Adjustable Pull Over Bra in white; and the Shadow Mesh Bra in black. The bras arrived quickly, in recyclable packaging including a flat paper and recycled poly mailer. Since ordering the bras, I’d read a little more about them and could barely wait to try them on: The brand calls the Revolution line “yoga pants for your boobs,” and since I basically live in my Girlfriend Collective compression leggings during the day because of their support and comfort, I literally couldn’t wait. I ripped open the box as soon as it arrived, barely remembering to duck underneath my dining table as I pulled off my top so I wouldn’t flash my neighbor through the window. 

(L) The bras arrived in recyclable packaging including a flat paper and recycled poly mailer; (R) I tried the Revolution V-Neck Bras, Adjustable Pull Over Bra, and Shadow Mesh Bra

The Revolution bras come in sizes 30A–44G, though you have to use their size and measurement guide to choose from XS–XXXXL++ in this line. I dutifully measured and read through their recommendations, and I ultimately chose S+. The plus cups are specifically designed for those with smaller bands and larger cup sizes. I think I could have also tried a S++ or even a M, but my general experience with wireless bras is that if they are too tight at first, they will almost always stretch out with a few wears; if they are just right on first try, they will basically be useless to me in a week. I just turned 39, and I breastfed my daughter for a year, so my boobs have lost some of their fullness and changed shape a bit. In other words, the already complicated guessing game of sizing bras over the internet continues to feel like a shot in the dark. 

“The Revolution bras come in sizes 30A–44G, though you have to use their size and measurement guide to choose from XS–XXXXL++ in this line.”

The bras come with one of those inserts that bathing suits have: You know, the shaping, nipple-coverage pad things? I have never liked them, thinking they always make my boobs look like muffins with a pat of butter on top. I much prefer the natural-looking shape of my breasts to the molded cups, so I immediately removed these from all except the Shadow Mesh Bra, which didn’t have an opening to pull it out. At first I was disappointed, but since the mesh has a kind of peekaboo look to it, the pads actually give a subtle little push for a very soft and beautiful cleavage. It didn’t end up looking blocky or fake at all! 

(From L to R) Revolution V-Neck Bra in Rose Water, the Astrology Collection in Scorpio, the Adjustable Pull Over Bra in white, and the Shadow Mesh Bra in black.

Knix makes some big claims about these bras: In addition to being “yoga pants for your boobs,” the brand says that they are comfortable and supportive enough that you won’t want to rip them off at the end of the day. Reader, this is no lie. I actually forgot I was wearing them! Twice I woke up in the middle of the night to go to the bathroom, realizing I had gone to sleep in the bras –– that’s how comfortable they are!

“The brand says that they are comfortable and supportive enough that you won’t want to rip them off at the end of the day. Reader, this is no lie.”

These bras are snug, no doubt about it. At first, I was a little worried I’d sized too tight and my boobs would be spilling out of the sides with one ill-timed forward bend, but within a few hours, they’d stretched just enough to fit exactly right. That’s because they’re designed with fabric that molds to your unique shape with wear — so don’t be alarmed if they feel a little tight-fitting at first.

There are five hook sizes on the V-Neck and the Shadow Mesh styles instead of the usual three, so if you’re in between sizes and worried about it being too tight, you’ll be able to easily adjust the band. All three styles including the Pull Over have adjustable straps as well, and the BeyondSmooth™ fabric is stretchy, smoothing, and the butteriest, softest thing I’ve ever put on my skin. 

So, do I recommend the Revolution Bras from Knix?

If you like the stretchy, form-fitting feeling of yoga pants, and you want your boobs to feel the same degree of snug, soft support without the rigid, structural elements of an underwire, then yes! These are not going to smash up your chest, but if you want to have an option for everyday wear that is more feminine and comfortable, this is your bra. I thought I might only wear them around the house, but they have quickly become my go-to for all non-exercise bra needs. And at less than half the cost of my former favorite bras, you better believe I’ll be coming back for more.

“If you like the stretchy, form-fitting feeling of yoga pants, and you want your boobs to feel the same degree of snug, soft support without the rigid, structural elements of an underwire, then yes!”

Leave it to Knix to find the precise formula for those of us who want function and comfort. After a lifetime of thinking I’d always have to sacrifice support for beauty, comfort for structure, or cost to find some vague combination of all three, it’s a relief to discover a brand committed to innovative designs that meet exactly my needs. It’s the best thing to happen to my underwear drawer — and definitely to my boobs!

THIS STORY IS IN PARTNERSHIP WITH OUR FRIENDS AT KNIX

Stephanie H. Fallon is a Contributing Editor at The Good Trade. She is a writer originally from Houston, Texas and holds an MFA from the Jackson Center of Creative Writing at Hollins University. She lives with her family in the Blue Ridge Mountains of Virginia, where she writes about motherhood, artmaking, and work culture. Since 2022, she has been reviewing sustainable home and lifestyle brands, fact-checking sustainability claims, and bringing her sharp editorial skills to every product review. Say hi on Instagram or on her website.