If there’s one wardrobe essential worth upgrading, it’s your underwear. In fact, when people ask me where they should start creating a non-toxic and sustainable wardrobe I always say start with the underwear drawer (followed by Active Wear). The pieces you wear closest to your skin and on your most intimate and sensitive body parts should be non-toxic, breathable, and responsibly made. This doesn’t just affect your skin, it can also post a direct correlation with your reproductive organs. This post covers the best organic cotton underwear from sustainable brands.

Organic cotton is not perfect, but it is leaps and bounds better than conventional cotton and synthetics. Conventional cotton uses pesticides and toxins in their production and dyes (even organic cotton isn’t foolproof so look for certifications for the best bet) and synthetics are not breathable and the dyes used for synthetics are almost always toxic. Plus, synthetics hold in smells and pill- two things nobody wants in their underwear.

Most of these are not 100% organic cotton (though the few that are note that in the description section).

List by Location

United States

Blue Canoe

• Price per pair: ~$40
• Size range: S–XL
• Certifications: GOTS
• Description: Known for ultra-soft cotton and covered elastic, making it especially comfortable for sensitive skin. USA organic cotton. 100% organic cotton options available.

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Kent

• Price per pair: ~$28
• Size range: XS–3X
• Certifications: GOTS, Fair Trade
• Description: Plastic-free basics brand focused on eliminating synthetics across the entire product lifecycle.

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La Coochie

• Price per pair: ~$14
• Size range: XXS–3XL
• Certifications: GOTS
• Description: Comfort-driven affordable organic basics with a focus on fit and breathable cotton fabrics.

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MATE the Label

• Price per pair: ~$28
• Size range: XS–XL
• Certifications: GOTS and/or Oeko-Tex
• Description: Elevated essentials with a clean aesthetic and strong emphasis on non-toxic, low-impact dyes.

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Net Positive

• Price per pair: ~$20
• Size range: XS–4X
• Certifications: GOTS, Oeko-Tex
• Description: Focused on climate-positive production and regenerative impact.Mixture of organic cotton and hemp.

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Oddobody

• Price per pair: ~$28
• Size range: XS–XXXL
• Certifications: GOTS, Fair Trade
• Description: Minimalist, 100% organic cotton underwear with no synthetics—designed for a barely-there feel.

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Only Hearts

• Price per pair: ~$32
• Size range: XS–XL
• Certifications:
• Description: 100% Peruvian organic supima cotton. Also has more lingerie options with lace.

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Proclaim

• Price per pair: ~$34
• Size range: S–3XL
• Certifications: GOTS
• Description: Best known for inclusive nude tones. Underwear in organic cotton or TENCEL.

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Pansy

• Price per pair: ~$39
• Size range: XS–5XL
• Certifications:
• Description: Fully U.S.-made underwear using organic cotton and plant-based dyes—one of the purest options available. USA grown cotton and cotton thread.

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Subset

• Price per pair: ~$20
• Size range: XXS–XXXL
• Certifications: GOTS, Fair Trade, OEKO-TEX, FSC
• Description: A leader in organic cotton basics with one of the most transparent supply chains—and a rare underwear recycling program.

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Canada

Q for Quinn

• Price per pair: ~$25
• Size range: XS–3X
• Certifications: GOTS, OEKO-TEX
• Description: One of the best brands for sensitive skin, with non-toxic dyes and soft 100% organic cotton basics.

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Europe

Designed by Debz

• Price per pair: ~$35
• Size range: XXXS-10X
• Certifications: Oeko-Tex
• Description: Handmade underwear emphasizing slow fashion and customizable fits with fun patterns.

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Molke

• Price per pair: ~$26
• Size range: XS–7XL
• Certifications: GOTS
• Description: Exceptionally size-inclusive brand known for bold prints and comfort-first design.

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Snocks

• Location: Germany
• Price per pair: ~$10
• Size range: XS–XL
• Certifications: GOTS, Oeko-Tex
• Description: A more affordable European basics brand with bundles and an anti-hole guarantee.

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Tizz & Tonic

• Price per pair: ~$25
• Size range: XS–2X
• Certifications: GOTS
• Description: Small, minimalist label focused on colorful, organic cotton basics, made in Europe.

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Try Kind

• Price per pair: ~$18
• Size range: XS–XL
• Certifications: GOTS
• Description: Soft, minimalist essentials with a focus on comfort and accessibility.

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Australia / NZ

Eco Intimates

• Price per pair: ~$38
• Size range: XS–2X
• Certifications: OCS, Oeko-Tex
• Description: Eco Intimates is designed in Australia and ethically made in small, family-run workshops in Bali using natural fabrics. We produce in small batches for quality, fit, and less waste.

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Mighty Good Basics

• Price per pair: ~$30
• Size range: XS–3X
• Certifications: GOTS, Fair Trade
• Description: Small-batch essentials brand centered on ethical production and everyday comfort.

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Thunderpants (also has UK and US Headquarters)

• Price per pair: ~$28
• Size range: XS–6XL
• Certifications: GOTS organic cotton
• Description: Cult-favorite brand for fun prints and durable organic cotton underwear made locally.

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Stonekin

• Price per pair: ~$18
• Size range: S–XL
• Certifications: GOTS, Oeko-Tex
• Description: Neutral-toned basics brand with a pared-back aesthetic.

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Best Overall

Sustainability + Trust

Subset
Best balance of certifications, inclusivity, and circularity (recycling program).

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Best 100% Organic Cotton (No Synthetics)

Oddobody
deal for sensitive skin and those avoiding elastane entirely.

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Best for Sensitive Skin

Q for Quinn
Non-toxic dyes + ultra-soft cotton make this one of the safest choices.

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Best Plastic-Free / Natural Materials

Pansy
One of the few brands fully committed to plastic-free, U.S.-made organic cotton.

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Best Budget-Friendly Option

Snocks
→ More accessible pricing while still offering organic cotton options.

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Best Fun / Non-Basic Styles

Thunderpants
Bright prints + ethical production—rare in the organic cotton space.

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Best Small-Batch / Artisan

Designed by Debz
Handmade, customizable pieces that align with slow fashion values.

Current Favorite

Net Positive

I am really enjoying these and the mix of organic cotton and hemp feels breathable, substantial, but simultaneously a little sexy.

Final Thoughts

This post covered the best organic cotton underwear by small sustainable brands. Choosing Organic Cotton underwear may seem like a small step, but it can make a big difference to your health and is a great foray into embracing sustainable fashion. The brands listed above are loved all around the world and there really is something for everyone.

You can check out our other sustainable brand guides HERE.

Affiliate Disclosure: This post may contain affiliate links, which means we may earn a small commission if you make a purchase through these links—at no extra cost to you. We only feature brands that align with Sensibly’s values of sustainability, ethical production, and thoughtful design.