7 Sustainable Suits & Blazers To Look Ethical & ProfessionalImage by DeIONESCU#sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
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7 Sustainable Suits & Blazers To Look Ethical & ProfessionalImages by Filippa K#sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
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7 Sustainable Suits & Blazers To Look Ethical & Professional

Lyall Mabin

Grey stuffy synthetic office attire, anyone?

Didn’t think so.

So lighten things up—for both yourself and the planet—by sporting a sustainable suit to your next board meeting instead.

Long gone are the days of sweating it out through that presentation in the likes of acrylic and nylon.

Thanks to these makers of eco-friendly and organic suits, you can be cubicle-comfortable on days other than Casual Friday.

To help you impress your coworkers while supporting the environment, we found the best sustainable work clothing brands, so you can focus on sending emails, filing reports, and gossiping at the water cooler.

Everything we recommend to you on Sustainable Jungle is independently researched and we ask all brands to confirm their claims. To avoid waste, we test products on an as needed basis. This post contains affiliate links. If you buy something through our links, we may earn a small commission. Learn more about why we do this here.

The Most Sustainable Suit Brands For the Planet Pro(Fressional)

Filling your work wardrobe with Ministry of Supply is easy with their catalog of high-performance pieces made from sustainable materials sourced mainly from plants.

For ladies looking for recycled polyester and organic cotton suits, check out the versatile, minimalist, and comfortable stylings from Sonderlier.

Head over to the bottom before you send that next email to learn more about how we found these makers of men’s and women’s sustainable suits.

The Full List Of Ethical & Organic Suits & Blazers

1. Ministry of Supply

7 Sustainable Suits & Blazers To Look Ethical & ProfessionalImages by Ministry of Supply#sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
Images by Ministry of Supply

About Ministry of Supply

Price Range: $94–$498

Ministry of Supply lives and breathes “workleisure”.

By that, they mean sustainable clothing that’s high performing enough for a daily jog into work, but looks nice enough to make a good impression on your new boss.

They offer everything you need to conquer the office in style, including women’s and men’s sustainable suits, blazers, pants, button-ups, tees, sweaters, and accessories.

The Velocity Merino Suit Jacket is one of their most sustainable options, with 49% merino wool in this partially organic men’s suit.

Ministry of Supply’s Ethical & Sustainability Practices


Using a “Scientifically Natural” approach, they blend performance and natural fabrics in their range of sustainable men’s suits.

Their vegan materials include merino wool and semi-synthetics like S.Cafe (made from recycled coffee grounds), viscose fabric, and bio-based polyester derived from corn and sugar cane.

These are combined with materials like GRS-certified recycled polyester, nylon, and sustainable water repellents from non-PFC, silicon-based DWR material. 

Unfortunately, while their suits incorporate sustainable fabrics, they all still bear significant portions of virgin synthetics. We’d love to see these get replaced with recycled or biobased alternatives.

Their suit’s fabric mills bear bluesign® and/or OEKO-TEX certification.

Supply chain & labor practices: 

Ministry of Supply makes sustainable men’s suits in factories across Japan, Taiwan, China, and the United States. They visit each facility regularly, ensuring they meet their ethical standards.

Their factories are also certified through WRAP and BSCI.

Carbon commitments & green practices:

To ensure their products are built to last, each design undergoes rigorous ASTM and AATCC durability testing.

As a Climate Neutral Certified brand, MoS reduces its carbon footprint through solar-powered mills, recycled materials, sea-freight shipping, and zero-waste production techniques like CO2 waterless dyeing.

You can return unwanted or old products for resale or recycling into new fabric via Shinkong Textiles. You can then buy pre-loved garments through Infinity Resale.

Packaging consists of recycled cardboard and compostable poly bags.


For tops and sustainable blazers, men’s sizes range XS-XXXL and women’s XXS-XXXL.

Men’s pants are available 28”–40″ and women’s in sizes 0–18. 

Community & charitable giving: 

Working with the Mbadika STEM non-profit, Ministry of Supply helps fund an at-home program teaching kids about science-based product development. For Mº Lab Field Kit purchased, they donate one.

They also donate gently worn garments to career-readiness programs through their 1 In, 1 Out Program.

2. Sonderlier

7 Sustainable Suits & Blazers To Look Ethical & Professional Images by Sonderlier #sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
Images by Sonderlier

About Sonderlier

Price Range: $98–$198

With clothes “made to support women’s everyday wellbeing”, Sonderlier creates a minimal capsule wardrobe for women made from sustainable fashion materials.

They offer made in the USA sustainable pant suits, versatile blouses, skirts, and dresses for work, date nights, and running errands. 

To stand out (while staying in dress code), the Ava Convertible Top is something versatile and stretchy—not to mention made from recycled plastic bottles. 

Sonderlier’s Ethical & Sustainability Practices


Most of Sonderlier’s ethical women’s suits use OEKO-TEX-certified fabrics, like TENCEL™, organic cotton, and recycled polyester.

Supply chain & labor practices: 

All garments from Sonderlier are ethically made in the United States. They work exclusively with factories that ensure fair treatment and pay. 


In sustainable suits, women will find XS–2XL sizes.

Community & charitable giving: 

Sonderlier is partnered with One Tree Planted to plant one tree for every purchase.


7 Sustainable Suits & Blazers To Look Ethical & ProfessionalImages by DeIONESCU#sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
Images by DeIONESCU


Price Range: $350–$375

Here to “tackle fast fashion’s status quo [and] honor the organic rebellion”, DelONESCU creates all garments from 100% pure hemp.

They offer everything you need to be office-ready, including blazers, trousers, tops, safari jackets, military jackets, skirts, and accessories. 

For something versatile you can wear daily or as part of your sustainable wedding suit, the Single-Breasted Blazer bucks the sentiment that hemp fabric is only for hippies (not professionals).

DeIONESCU’s Ethical & Sustainability Practices


DeIONESCU’s entire catalog of completely organic business suits is made from 100% hemp fabric—that’s it. 

Supply chain & labor practices: 

DelONESCU works with local artisans and responsible manufacturers to make their ethical suits in Transylvania.

After sourcing the hemp from Ukraine, the spinning, weaving, finishing, and manufacturing are finished locally in Romania. 

Carbon commitments & green practices:

DelONESCU keeps their emissions minimal by having their entire supply chain local and using hemp—a “super fiber” chosen for its strength, durability, wearable benefits, longevity, and carbon sequestration.

By selling with Etsy, they’re ensuring any purchase of their vegan organic men’s suits on the platform is shipped through carbon offset means.


For each sustainable blazer, women’s sizes run XS-XL and men’s 30R-50R.

Community & charitable giving:

They donate 5% of profits toward giving a quality education to Romanian village school children.

4. Filippa K

7 Sustainable Suits & Blazers To Look Ethical & Professional Images by Filippa K #sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
Images by Filippa K

About Filippa K

Price Range: $470–$2,080

Filippa K delivers fresh, professional eco-friendly suits for men and women alike. 

Their catalog also includes blazers and suit jackets—everything from formal wear tuxedo blazers to use as sustainable wedding suits to casual crop blazers—as well as professional dresses, skirts, tops, outerwear, trousers, and accessories to pair with them.

Not only is the Jackie Cool Wool Blazer made from natural or recycled materials, but its fabric mill runs on solar energy and recycles water.

Filippa K’s Ethical & Sustainability Practices


Most suits feature either a mulesing-free ethical wool or GOTS-certified organic cotton outer body.

They’re then lined with recycled polyester made from plastic bottles and Enka viscose locally made using Swedish tree pulp.

Supply chain & labor practices: 

Clicking on any Filippa K item displays the country (entirely Portugal, in the case of their sustainable suits) and the factory in which it was made. 

They are also members of the Fair Wear Foundation and the Sustainable Apparel Coalition, and hold GOTS and OCS certifications. 

Carbon commitments & green practices:

Filippa K demonstrates its commitment to circular fashion with a collection of Pre-owned pieces. 

By 2023, they’ll take back any Filippa K garment to be remade, resold, or recycled. 

By that year, 100% of Filippa K styles will be fully traceable and certified, excluding where certification does not exist.

They also plan to reduce emissions by 50% before achieving carbon neutrality by 2050, and are in the process of switching shipment materials to uncoated FSC-certified paper and recycled boxes.


In their ethical suits, UK chest/bust sizes 44–56 are available for men and 30–42 for women.

Community & charitable giving: 

Filippa K works with organizations like WaterAid to fundraise for their projects to improve access to safe water, sanitation, and hygiene in poor communities. 

They also support the Swedish Society for Nature Conservation’s nature protection efforts.

5. Mantaikotai

7 Sustainable Suits & Blazers To Look Ethical & Professional Images by Mantaikotai #sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
Images by Mantaikotai

About Mantaikotai

Price Range: $133–$222

Lithuanian ethical fashion brand Mantaikotai makes some of the best women’s natural fiber suits—and in more colors than the usual black, brown, and gray.

Their eco-friendly clothing catalog includes unique blazers, jumpsuits, skirts, tops, bottoms, and knit garments that can be worn in and out of the office. 

The Milan Suit, for example, comes in everything from mustard to forest green. It’s 100% softened Lithuanian linen body provides perfect “laid-back Tech-CEO vibes”. 

Mantaikotai’s Ethical & Sustainability Practices


Mantaikotai specializes in 100% organic linen suits that are OEKO-TEX certified.

These are their best vegan suits (and their most sustainable), but other styles feature an 80-90% wool and polyester or silk outer with a viscose lining.

Since we’re not 100% sure if their silk is ethically sourced (i.e. recycled or peace silk) and if their viscose is manufactured in a closed loop, we recommend sticking to the lovely linen suits.

Supply chain & labor practices: 

Each item is handcrafted and uses materials sourced locally in Vilnius. 

Owner Lina does all the sewing, her husband Justas manages the shop, and her mother Laima handles any knitting.

Embodying slow fashion, each item takes around one month to produce—so don’t leave ordering your Honolulu sustainable wedding suit to the last minute!


Preset sizes run XS-XL, but they also offer ethical custom suits if you provide measurements.

6. Eileen Fisher

7 Sustainable Suits & Blazers To Look Ethical & Professional Images by Eileen Fisher #sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
Images by Eileen Fisher

About Eileen Fisher

Price Range: $178–$448

Eileen Fisher will keep you comfortably professional in their line of sustainable women’s suits

Any one of their blazers will do, but the relaxed, boxy-fit Linen Stand Collar Jacket will keep you comfortable from 9 to 5. 

They also offer sweaters, cardigans, jackets, pants, jumpsuits, dresses, and accessories that can be worn in and out of the office. 

Eileen Fisher’s Ethical & Sustainability Practices


EF’s most eco suits are made of “Cotton Blend Ponte,” a wrinkle-resistant blend of organic cotton, recycled polyester, and a touch of elastane—because who has time to iron before their 8am hour-long commute?

Others in their workwear collection feature 100% silk, a viscose/silk blend, or a TENCEL™ lyocell/nylon blend, most of which are bluesign® approved.

Supply chain & labor practices: 

Eileen Fisher is a Certified B Corp and a member of the Fair Labor Association (FLA) and Fair Factories Clearinghouse. 

All manufacturing partners are SA8000 compliant and adhere to the ETI ethical manufacturing base code.

Carbon commitments & green practices:

EF’s Waste No More take-back program converts returned/recycled items into new products like upcycled denim accessories or industrial materials like carpet pads.

They also provide the Renew catalog of gently worn pieces that are returned to a like-new condition and sold at discounted rates.

Eileen Fisher uses renewable energy, carbon offsets, and is incorporating more regenerative grown fabrics into future lines to reduce emissions.


As one of our favorite sustainable plus-size clothing brands, all of their eco suits are available XXS-3X.

Community & charitable giving: 

The ethical fashion brand provides grants for Women in Environmental Justice, contributing millions to countless women across the globe. 

The Eileen Fisher Foundation is dedicated to supporting systemic changes that positively impact women and girls worldwide.

7. Moss

7 Sustainable Suits & Blazers To Look Ethical & Professional Images by Moss #sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
Images by Moss

About Moss Bros

Price Range: $518–$558

Moss Bros creates ethical and sustainable men’s suits in addition to other corporate dress code essentials: jackets, button-ups, bottoms, shirts, shoes, and anything else you need to ace an interview.

The Moss Bros Eco Suit line—like this Tailored Fit suit—offers well-tailored organic suits constructed from 100% linen, so you can feel comfortable sporting one of nature’s most sustainable (thermo-regulating) materials while in the concrete jungle.

Otherwise, shop classic styles of sustainable tuxedos, tweed suits, kids suits, and more.

Moss’s Ethical & Sustainability Practices


These ethical men’s suits use materials like organic cotton, recycled polyester, TENCEL™, linen, wool, and some BCI cotton.

They’re a member of the Better Cotton Initiative, which aims to make global cotton production better for the people who produce it, the environment, and the sector’s future.

Supply chain & labor practices:

Moss Bros works with suppliers and WRAP-certified factories from all around the world (like China, India, Portugal, and Turkey). 

They conduct regular audits to ensure partners meet their quality and ethical standards regarding living wage payments, fair working conditions, and respect for employees.

They further promote workers rights and sustainable practices through memberships to the Sustainable Apparel Coalition and ETI.

Carbon commitments & green practices:

If you’re seeking sustainable men’s suits for an occasion, but don’t wear them regularly, consider their Moss Hire rental program. It allows customers to wear premium pieces at a fraction of the cost.


In Moss Bros sustainable suits, men’s sizes run 34–54. Matching pants can be purchased in sizes between 28”–48”.

Community & charitable giving:

For this London-based ethical suit brand, UK charities are close to heart, including The Prince’s Trust, The Royal Marsden Cancer Charity, and Prostate Cancer UK.

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We cover the latest in sustainable living, fashion, zero waste, beauty, travel, finance and more…

How We Found The Best Ethical Suits

It used to be challenging to avoid fast fashion 9 to 5, but these ethical business suits make it easy.

But how did these brands ace our interview?

They met most or all of our sustainable and ethical fashion.


Finding sustainable fabrics is challenging on its own—but it becomes increasingly difficult when shopping for a well-tailored suit. 

We prefer natural fiber suits for women and men because they’re biodegradable and can be grown organically. These include: organic cotton, hemp, wool, linen, and ethically sourced wool or silk.

Semi-synthetics like modal and lyocell fabric are a second choice, though we suggest avoiding viscose if possible because of the harsh chemical processing and non-closed loop process usually used to make it.

Recycled synthetics are better than virgin petrochemicals, but still release microplastics when washed and should be used with a GuppyFriend (unless they must be dry-cleaned).

Supply chain & labor practices: 

We look for sustainable fashion brands with a transparent fashion production system that ensure living wages and fair working conditions via third-party manufacturing certifications and audits. 

What do we avoid?

Fashion industry brands known for greenwashing and spending more time and money on appearances instead of results. 

Carbon commitments & green practices:

Carbon offset programs, localized production, eco-friendly packaging, renewable energy, and regenerative agriculture help us get through the work week knowing we’re doing so in garments associated with fewer emissions and less waste.

Brands that embrace circularity with take-back programs for reuse, recycling, or reselling are another benefit we consider. 


No one wants to be uncomfortable in the office, so we look for brands with versatile, diverse, and inclusive sustainable clothing across many sizes. 

Community & charitable giving: 

Brands that give back are always employees of the month, whether it be through supporting women’s empowerment, environmental movements, or other social programs.

Final Thoughts On Sustainable Suits & Blazers

We can’t get rid of stuffy offices or annoying coworkers, but these sustainable blazers and suits will help you feel your best while supporting the environment. 

These brands can help you embrace a conscious corporate wardrobe with sustainable fabrics, durable designs, and circular business practices. 

Just remember, the easiest way to incorporate sustainable materials like recycled fabrics into your work week is to start slow (fashion) and purchase second hand suits. 

If you’re waiting for payday or that long-awaited promotion, seek something affordable in the meantime from online thrift stores.

Unlike that project proposal due on Monday, you don’t have to rush to fix your wardrobe or save the environment—every little bit of effort goes a long way.

Like sharing this list of sustainable men’s suits and women’s blazers with your coworkers, so they can put in their two weeks notice from the fast fashion industry rat race in style.

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7 Sustainable Suits & Blazers To Look Ethical & Professional Image by Mantaikotai #sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle
7 Sustainable Suits & Blazers To Look Ethical & Professional Image by DeIONESCU #sustainablesuits #sustainablemenssuits #sustainablewomenssuits #ethicalsuits #ethicalbusinesssuits #sustainablesuitbrands #sustainablejungle

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