Organic and sustainable plus-size apparel has been largely unavailable in the past, but in the past few years, that has (finally!) changed.
There are now quite a few brands making comfortable and cute plus-size underwear out of natural and eco-friendly materials like organic cotton and hemp. And I’ve done the research for you and compiled them all in a list for you here.
Here's what this guide covers:
This guide contains product recommendations and we may receive compensation if you purchase through certain links. As always, we only make recommendations that are genuine!
Where to Find Natural, Organic, & Eco-Friendly Plus-Size Underwear
All of the brands below carry size-inclusive underwear that at least goes up to 3XL. Not only that, but we’ve picked out the brands that prioritize the highest possible quality product, along with ethical and sustainable manufacturing.
So let’s get to it. Here are the best brands for organic plus-size underwear for curvy ladies!
Subset

Subset (formerly known as Knickey) offers Fair Trade plus-size underwear is made with OEKO-TEX and GOTS certified organic cotton plus 5% elastane for stretch.
Their briefs, thongs, hipsters, and bralettes are all colored using non-toxic and eco-friendly dyes. I can attest to how comfy these undies really are—I have re-bought them several times over the years! I wear them for basically everything: working out, going out, running errands, etc.
Sizes: 2XS-4XL
Oddobody

Oddobody’s underwear is actually made in Fair Trade Certified Factories out of 100% GOTS organic cotton. Their undies come in several solid colors and various styles (briefs, high-waisted, string bikini, french cut, and thong). They also have other loungewear, too, like sleep sets, tanks, and pants.
Sizes: XS-3XL
Proclaim

Some of Proclaim’s underwear is made from a blend of organic cotton and hemp, while others are crafted from TENCEL—which, in my opinion, has an amazing feel. Most styles also include a bit of spandex for added stretch.
What I appreciate about Proclaim is that they’re the real deal in every way. They manufacture locally and ethically, prioritize eco-friendly materials, and are actively working to reduce waste, water usage, and plastic in their production. On top of that, they’re committed to inclusivity, offering options that reflect a diverse range of body types and skin tones.
Sizes: S-3X
Pact

When it comes to organic cotton underwear that’s on the more affordable end of things, Pact is one of the best. They offer a wide range of styles, colors, and patterns, and all of their panties and bralettes are GOTS and Fair Trade certified.
Sizes: XXS-3XL
Use code THEFILTERY15 for 15% off full-priced items.
Q for Quinn

Q for Quinn has a couple different styles of underwear for women that are made out of 100% GOTS organic cotton and azo-free dyes. (Plastic-free!)
They also have a first-pair guarantee, so you can try them out and make sure you like them without worry.
As a bonus, Q for Quinn donates a school meal for every purchase you make.
Sizes: XS-3XL
Object Apparel

All of Object Apparel’s eco-friendly underwear (for men & women) is handmade to order in Detroit, Michigan, USA out of organic cotton and non-toxic, water-based dyes. They carry plus size panties, briefs, boxer briefs, and bralettes that come in solid colors in addition to fun designs.
Sizes: XS-3XL
WAMA

If hemp is your thing, check out WAMA. Their plus-size underwear, bralettes, and boxer briefs are made out of a blend of sustainable hemp, organic cotton, and a little bit of spandex. They’re made in a WRAP certified factory in Vietnam.
Hemp is a great option for underwear because it’s naturally anti-microbial and can be grown without any toxic pesticides. You can learn more about that here.
Sizes: XS-4XL
La Coochie

La Coochie offers a range of bralettes and underwear that primarily uses GOTS organic cotton.
Almost all of their styles use 5% elastane for stretch. Some of them use even more synthetic (nylon + elastane) for the mesh panels and lace. So if you want to go with the least amount of synthetic fabric possible, choose the mesh-free styles.
Sizes: 2XS-3XL
Tomboyx

Tomboyx doesn’t use organic fabrics for most of their underwear (although they do have a small organic collection!), but this brand makes my list as an honorable mention for a couple of reasons.
First, their sizing has one of the widest ranges I’ve found, from 3XS to 6XL.
Second, they have a really wide variety of styles—so whether you prefer briefs, thongs, long boxer briefs, or something else, you can get what’s comfortable for you.
Third, even though they don’t use organic cotton, they do use OEKO-TEX certified natural cotton, which is better than most synthetics.
They also have a TENCEL collection, which is another great option for a non-toxic fabric. Although it technically qualifies as a semi-synthetic, TENCEL is manufactured from plants using a closed-loop process, which means no potentially toxic chemicals make their way out of the manufacturing process and into the environment. Check out this article for more info on that.
Even More Brands for Non-Toxic Plus-Sized Undies
If you didn’t find what you were looking for, here are even more options:
- Duluth: Their “Free Range” collection is made of 94% organic cotton + 6% spandex. Sizes XS-3X.
- Eco Intimates: Based in Australia. Sizes 8-20. Made of majority GOTS certified organic cotton and non-toxic dyes.
- Le Buns: Based in Australia. Underwear & bras are mostly 90% organic cotton + 10% spandex. I like their bralettes (I find them to be more comfortable than the undies for some reason.) Sizes 6-20. Code THEFILTERY15 gets you 15% off.
- Pansy: Made in the USA out of domestically grown and milled organic cotton combined with recycled spandex. Sizes S-5XL.
- Third Love: Most of their products are made with synthetic fabrics, but they do have an organic cotton collection that includes briefs, thongs, and bralettes. Sizes XS-3X.
- Thunderpants: Made in the USA. Mostly 90% organic cotton + 10% spandex. Sizes S-4XL.
Healthy Underwear Means Natural Fabrics & Non-Toxic Dyes
We all know how important it is to take care of our hu-ha health. Prioritizing natural and organic fabrics can help us do that in a few ways.
One, natural fabrics are more breathable. Keeping things dry down there helps to prevent bacteria overgrowth and yeast infections.
Not only that, but a lot of synthetic fabrics contain chemicals that can be toxic to human health, especially when they accumulate in the body for long periods of time.
Lastly, many fabrics are finished with permanent chemical finishes, including fabric softeners, petrochemical dyes, formaldehyde, and volatile organic compounds (VOCs). For example, if you see underwear or other articles of clothing that have labels such as “wrinkle-free,” that should be a red flag for you, indicating that the fabric has been treated with one of these groups of chemicals.
This is why most OB-GYNs highly suggest stocking your underwear drawer with natural materials like cotton. BUT, organic cotton is even better than conventional cotton because it’s grown without the use of toxic herbicides and pesticides.
So look for third-party certifications like Global Organic Textile Standard (GOTS) organic cotton and OEKO-TEX, which indicates that the product has been tested for a long list of potentially toxic substances.
P.S. While you’re updating your underwear drawer, feel free to check out my other guides for non-toxic, organic, and eco-friendly undies:
- here are the best organic cotton underwear brands that are made in the USA
- these are the best hemp underwear brands
- here’s a list of the best TENCEL undies brands
- if you’re looking for organic cotton thongs, check out this article
- here’s where to find organic maternity undies and nursing bras
- here are the most comfortable and supportive organic cotton and hemp bras, bralettes, and sports bras
- and here are the best organic boxers & underwear for men
Choosing natural, organic, eco-friendly, and size-inclusive underwear is better for your health and better for the future of our planet.
If I missed your favorite organic plus-size underwear brand, let me know in the comments and I’ll consider adding it to the list!