9 Best Organic And Nontoxic Underwear For Men (2025)

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We’re big fans of natural materials for our skivvies — these are our favorite men’s boxers and boxer briefs that are safe, organic, and made to last.

If you’re like some of the dudes we know, your favorite underwear probably has a few holes in them (don’t worry, we’re not judging!). But if you are on the lookout for new sustainable men’s underwear, we got you. We’ve sourced the best options out there for comfortable waistbands, minimal seams, and soft fabrics. Whether you’re searching for cotton boxers, Modal boxer briefs, or anything in between, these sustainable underwear brands have your butt covered… literally.

Why consider organic underwear?

Choosing organic men’s underwear offers a wide range of benefits that go far beyond just comfort — it’s a decision that supports your health, the planet, and the people who make your clothes. Organic underwear, especially when made from certified organic cotton, is grown without the use of synthetic pesticides, herbicides, or genetically modified seeds. This not only helps reduce harmful chemical runoff into waterways and soil, but also lowers your personal exposure to residues that may remain in conventional fabrics. These chemicals, many of which are known irritants or endocrine disruptors, can linger in textiles and be absorbed through the skin, especially in sensitive areas where underwear sits close to the body all day. By choosing organic, you’re minimizing that risk and opting for a cleaner, safer material.

In terms of comfort, organic cotton boxers and briefs are known for their softness, breathability, and durability. This makes organic underwear especially beneficial for people with sensitive skin, allergies, or conditions like eczema. The breathable nature of organic fibers also helps reduce moisture buildup, lowering the risk of irritation or fungal infections in the groin area.

Beyond personal benefits, organic farming practices have a much smaller ecological footprint. They conserve water, improve soil health through crop rotation and composting, and help reduce greenhouse gas emissions. Many organic underwear brands also go the extra mile by using low-impact dyes and nontoxic finishing techniques, further minimizing harm to the environment. Equally important are the social and ethical values tied to organic production. Certified organic clothing is often linked to fair trade or ethical labor practices, meaning the farmers and factory workers involved are more likely to be paid fair wages and work in safe, humane conditions.

What type of underwear is best for fertility?

When it comes to male fertility, underwear choice may seem like a small detail, but it can have a surprisingly significant impact. Fertility is influenced by a variety of lifestyle and environmental factors, and what men wear daily can play a role in either supporting or hindering reproductive health. One of the most critical factors to consider is temperature regulation. Sperm production requires a cooler environment than the body’s core temperature, which is why the testicles are located outside the body in the scrotum. Wearing tight-fitting underwear, such as briefs or compression shorts, can trap heat and raise the temperature in this sensitive area, potentially impairing spermatogenesis (the process of sperm production). For this reason, looser styles like traditional boxers or relaxed boxer briefs are generally recommended, as they allow for better airflow and reduce the risk of overheating.

Fabric choice also plays a vital role. Breathable, natural materials such as organic cotton, bamboo viscose, or hemp are ideal because they wick moisture away from the skin and allow for proper ventilation. Organic fabrics, in particular, are grown without harmful pesticides or chemicals and are often processed without toxic dyes or finishes. This is important not only for comfort and skin sensitivity but also for hormone health.

A lesser-known but increasingly concerning factor is the potential exposure to endocrine-disrupting chemicals (EDCs) found in certain synthetic fabrics and textile treatments. Commonly used synthetic materials like polyester, nylon, and spandex may contain or be treated with phthalates, formaldehyde, perfluorinated chemicals (PFCs), and even bisphenol A (BPA) — chemicals known for their ability to interfere with hormonal function. Studies have linked these compounds to reduced sperm count, motility issues, and disruptions in testosterone levels.

Another consideration is how the underwear is dyed and finished. Many commercial dyes contain heavy metals or azo compounds, which can irritate the skin and potentially disrupt hormones. Flame retardants and anti-wrinkle treatments used in some fabrics may also contain harmful chemicals. Choosing underwear brands that disclose their production practices or specialize in non-toxic, sustainable fashion can help reduce exposure to these risks.

What are the relevant certifications for nontoxic underwear?

When shopping for nontoxic underwear, several trusted certifications can help ensure that the materials used are free from harmful chemicals and produced with human and environmental safety in mind:

• bluesign®: This certification screens chemicals used in textile production to ensure they meet strict safety standards for workers, consumers, and the environment. While bluesign® products may still contain synthetic materials, they are produced under strict guidelines that minimize toxicity and pollution.
• OEKO-TEX® STANDARD 100: OEKO-TEX is one of the most recognized certifications for textile safety. It means that every part of the garment — down to the thread, elastic, and label — has been tested for over 100 potentially harmful substances, including formaldehyde, heavy metals, azo dyes, and phthalates. If you’re concerned about direct skin contact with toxins or endocrine-disrupting chemicals, this certification is a great starting point.
• GOTS (Global Organic Textile Standard): This certification goes a step further by verifying the use of certified organic fibers and ensuring environmentally and socially responsible manufacturing. For a product to be GOTS-certified, it must contain at least 70% organic fibers, and the entire supply chain — from harvesting to dyeing and finishing — is held to strict criteria. GOTS bans toxic bleaches, dyes, and finishes, making it especially relevant for anyone seeking organic cotton or natural fiber underwear.
• Fair Trade Certified: Underwear that is Fair Trade Certified ensures fair wages, safe working conditions, and ethical labor practices, while often meeting environmental standards. It’s a way to support both worker well-being and nontoxic, sustainable materials.

Our criteria:

Our editors have researched and reviewed sustainable fashion for a decade. These are our top picks of brands for men’s underwear that use organic, natural materials for soft, breathable, and long-lasting briefs and boxers to refresh your underwear drawer. We regularly update this list with emerging favorites that meet the criteria below.

• NATURAL & ORGANIC | Made with soft, breathable, and safe fabrics, these men’s boxers only use natural and organic fabrics like organic cotton, or Tencel in their construction, benefitting both our health and the planet.
• SOFT & COMFORTABLE | Uncomfy boxers are a no-go, so we’ve ensured each of these brands guarantee the softest and most seamless feeling boxers for all-day comfort!
• MADE TO LAST | There’s nothing more agitating than holes in our boxers! Fortunately, these organic boxers are made with high quality materials that are durable and made to last through dozens of wears and washes.

Looking to upgrade the rest of your closet? Check out our sustainable fashion guide for men, sustainable men’s swimwear, and our top picks for sustainable men’s shoes.

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Table of contents

• Best For Organic Cotton Underwear: Pact ($18)
• Best For Long Inseams: Quince ($40)
• Best For Chafe-Free Underwear: Patagonia ($35)
• Best For Multipacks: Organic Basics ($40)
• Best For Bamboo Underwear: Boody ($17+)
• Best For Supima® Cotton Boxers: Everlane ($24+)
• Best For Gender-Inclusive Underwear: TomboyX ($16+)
• Best For Hormone-Safe Materials: NADS ($48)
• Best For Undyed Underwear: Industry of all Nations ($25+)

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1. Pact

Biodegradable

Budget friendly

Eco friendly packaging

Fair trade

GOTS certified

Natural materials

Recycled materials

Size inclusive

Best For | Organic cotton underwear
Product Range | Boxer shorts, boxer briefs, briefs, trunks, multi-packs
Size Range | S – 2XL
Price Per Pair | $18

For men’s underwear that is as sustainable as it is soft, Pact is our go-to. All pairs are made with a breathable and soft organic cotton blend in Fair Trade certified factories. These organic underwear styles won’t dig into your skin, and stay exactly where they’re meant to be all day long. Stock up on a solo pair or grab a multi-pack where you can get up to four at once at a discounted price. Pact’s underwear is available in various colors and styles.

Customer Review | “My husband is obsessed with these. We are changing to organic clothes and this by far is the first step. He’s never been cooler until these.” – Tammy S. (Read all reviews.)

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Featured image from Boody

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