23 Oct

Sea-Friendly Sustainable Swimwear Brands

Swimwear is one of those basics that needs to check a few boxes. It needs to be comfortable, look great, and not get warped after a couple of wears and washes. While it can be tempting to grab a few new trendy bikini sets or a couple of flashy one pieces every year as the warm weather rolls around, there is something to be said for supporting the best sustainable swimwear brands that create timeless, flattering, and ethically made pieces that will take you from the pool to the beach and back again.

The fabric situation for swimwear

Unfortunately, swimwear is usually made with harmful synthetic fabrics like nylon, polyester, and spandex. While they are good choices in terms of practicality, they are also bad news for the planet as plastic-based materials! Then there is the issue of microfibre release when washing, which you can read more about in our helpful guide. Hint: handwashing is a go!

Luckily, these sustainable swimwear brands are stepping up and incorporating more eco-friendly materials such as ECONYL, hemp, and recycled nylon into their collections.

Read on to discover the best sustainable swimwear brands we’ve found from around the world.

USA and Canada

Natasha Tonic

Rated: Good
red and white striped eco-friendly bikini by Natasha Tonic

Swimwear made out of hemp? Yes please. For decades, swimsuits have been made out of polyester, which is non-biodegradable and bad for the skin. Natasha Tonic’s hemp swimwear fabric is based around a unique, natural hemp fibre that is antimicrobial, UV resistant, durable, and a healthier choice for your skin and our oceans. Even better, each piece is slightly different since they're printed by hand, allowing for each sustainable bikini to be tailored for the most gorgeous you! Find sizes XS-XL.

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Shop Natasha Tonic.

Sage Larock

Rated: Good

Made in-house by a small team in LA, sustainable luxury brand Sage Larock produces timeless swimwear and activewear that is sure to turn heads. Its stunning pieces are made from an Italian recycled plastic fabric that is high-quality and long-lasting—and a percentage of profits from each sale goes to support marine conservation non-profits! Sage Larock stocks sizes XS-L.

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Shop Sage Larock.

Vitamin A

Rated: Great
woman smiling on sand wearing sustainable swimwear by Vitamin A

Made locally in California, Vitamin A’s collections of swimwear and loungewear use a high proportion of eco-friendly materials, including recycled nylon. The brand also uses a waterless process to print its designs with, reducing its chemical and water usage! Find the pieces in sizes XS-XL.

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Shop Vitamin A.

Shop Vitamin A @ Curate.


Rated: Good

Patagonia is a brand which truly lives and breathes the great outdoors. It makes clothing for trail running, climbing, mountain biking, surfing, skiing, and snowboarding. Patagonia has strong labour rights and uses recycled, rather than virgin, polyester. It has also committed to reducing its energy use and emissions, and stocks sizes XS-3XL.

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Shop Patagonia @ LVR Sustainable.

Shop Patagonia @ Labell-D.

Shop Patagonia.

Shop Patagonia Pre-Owned @ Vestiaire Collective.

Shop Patagonia Kids Pre-Owned @ Retykle.


Rated: Good
Modern white ethical bikini top by LONDRE

LONDRĖ is a Canadian minimalist sustainable swimwear brand making pieces from recycled plastic bottles. So far, LONDRĖ has recycled 90,000 plastic bottles from the streets and beaches of Taiwan! Looking to create the smallest impact possible, all water used in the brand’s process is able to be reused and recycled. The brand is also creating positive change in our global community, using the business to raise awareness and funds for women's health and environmental initiatives, donating over $10,000 to organizations such as Amazon Watch and the Yellow Hammer Fund. Swoon!

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Mara Hoffman

Rated: Good

With a focus on mindful and conscious practices, Mara Hoffman uses eco-friendly materials including GOTS certified cotton, recycled nylon, and recycled polyester, and even has a range of Oeko-Tex STeP certified products. Items come in sizes XS to 3XL, and the brand also has a gorgeous extended sizes collection, so you can be sure to find a new wardrobe addition no matter the bod you rock!

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Shop Mara Hoffman @ Reve en Vert.

Shop Mara Hoffman @ Farfetch.

Shop Mara Hoffman Pre-Owned @ Vestiaire Collective.

Shop Mara Hoffman.

Australia and New Zealand

Elle Evans

Rated: Great

Founded in 2013, Elle Evans Swimwear creates beautiful, sustainable, swimwear and activewear for people who care about fashion and the future. The brand uses post-consumer waste fabrics and traces all of its supply chain. The range is stocked in sizes XS-3XL.

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Shop Elle Evans.


Rated: Good

Spell is an Australian modern-bohemian fashion brand inspired by far-off places, vintage treasures, and childhood memories. Proudly designed and sampled in Byron Bay, and produced ethically in factories around the world. Most garments are available in sizes 2XS to 2XL.

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Shop Spell.


Rated: Good
BAYTHE clay active sustainable bikini bra top

BAYTHE is a premium swimwear-meets-activewear label designed in Bondi Beach, providing women of all shapes and sizes the confidence, comfort and understated sexiness they've always wanted in a swimsuit. This active bikini crop is an easy summer staple made to be multi-functional and move with you throughout your day. Despite being designed without wires, this bra top still provides full bust support and is quick-drying, so you can wear it as a bra for yoga, pilates, barre and walking!

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Salt Gypsy

Rated: Good

Salt Gypsy is a women’s surfwear brand from Byron Bay—the spiritual home of Australia’s eco-conscious surfing community. These gorgeous, sun-smart designs are all made from 100% recycled nylon, helping to reduce plastic waste in our precious oceans.

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Shop Salt Gypsy.

Europe and the UK

Organic Basics

Rated: Great
woman of colour wearing ochre recycled plastic bikini

Re-Swim Bikini Top – Ships internationally from Denmark

Organic Basics offers high-quality sustainable fashion basics for men and women in organic materials. The Denmark-based brand puts sustainable thinking at the centre of everything—it only chooses fabrics that care for our environment, and only ever partners with factories that care about their impact. The newly-launched swimwear range is made from recycled plastic from oceans and landfills, like in this cute Re-Swim bikini top! Organic Basics clothes are available in sizes XS-XL.

See the rating.

Shop Organic Basics @ Rêve en Vert.

Shop Organic Basics @ thegreenlabels.

Shop Organic Basics.


Rated: Good

Barcelona based allSisters is a sexy, sustainable swimwear brand that cares about the earth. The brand uses the highest quality recycled fabrics to create high-end swimsuits and raises money for biodiversity protection non-profit Surfers Against Sewage, tackling plastic pollution. Rock these thoughtful, innovative ethical beachwear designs with pride and prepare to ride the wave of compliments headed your way!

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Shop allSisters.

The Nude Label

Rated: Good


Two people wearing black and maroon ethically made briefs by The Nude Label.

The Nude Label – Briefs

Cheeky underwear that gives you a relaxed, simple fit. Classic, comfy, and with a very flattering design. 5% discount on packs of 3 or more briefs. (Ends: 22 DEC)

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Two people wearing a liliac and a black pair of sustainable socks made by The Nude Label.

The Nude Label – Unisex Socks

Breathable, naturally antibacterial, and antifungal genderless socks. To help your feet stay happy and healthy. 5% discount on packs of 3 or more socks. (Ends: 22 DEC)

Shop now

The Nude Label curates comfy vegan underwear, swimwear, and sandals that feel as good as they look. All the pieces are made in a family-run factory in Valencia, Spain. The closeness to the studio allows the Nude Label to have a bigger control over the process and ensure good working practices. Most products are available in XS-XL.

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Shop The Nude Label.

Stay Wild

Rated: Good
Light blue simple sustainable bikini by Stay Wild

If you’re looking to add to your capsule wardrobe, you’ve come to the right place. Stay Wild is a London-based swim brand founded by Natalie Glaze and Zanna Van Dijk. Designed to be flattering, feminine, and functional, the brand’s capsule collection features a sports luxe style with a thick strapped bikini top and a high waist bottom for a firm fit and feel. The slightly cheeky cut means you get all the coverage with plenty of confidence!

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Shop Stay Wild.

la fille d’O

Rated: Good

la fille d’O (which translates to “the daughter of O”) is the voice of a generation. In 2003, designer Murielle Scherre created this lingerie brand with the vision of being a role model. The brand produces long-lasting products, adhering to the principles of slow-fashion and manufactures locally. It also uses low-impact non-toxic dyes in all its range!

See the rating.

Shop la fille d'O.

Conscious Swimwear

Rated: Good
white spotted sustainable bikini by Conscious Swimwear brand

All the trends and no nasties. Every Conscious Swimwear piece is cut and sewn by hand in the brand’s Lisbon atelier. As such, all of its models are limited due to fabric availability. Shipped in sustainable packaging and made of 78% recycled plastic from ocean waste, Conscious Swimwear is raising the bar in sustainable swimwear.

See the rating.

Shop Conscious Swimwear.


Rated: Good
Purple sustainable bikini set by Bower

Launched in early 2015, Bower is a sustainable swimwear and resort wear brand. Bower aims to create design-led swimwear with a focus on the now with a nod to the past. The designs utilise luxury Italian fabrics, partnered with complex construction and considered details. With components sourced from Italy and France, the final product is constructed at a small, specialised factory in Italy. Along with the brand’s commitment to the Earth, Bower has dedicated 1% of all orders to be donated to the Healthy Seas initiative. Find sizes XS-XL.

See the rating.

Shop Bower @ Curate.

Shop Bower.


Rated: Good

Born from the needs of hardy British surfers, Finisterre is a pioneering, sustainable outdoor brand, built to inspire a love of the sea and anchored in exceptional products.

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Shop Finisterre.


Rated: Good

Underprotection is a Danish brand combining ethics and aesthetics, creating underwear, loungewear, and swimwear from sustainable materials like recycled polyester and organic cotton. All of its packaging, paper, and polybags are either recycled or biodegradable, and it only works with certified factories as it believes “fair working conditions and fair wages are human rights”. Underprotection exists to celebrate women of all kinds, and its goal is to make them feel as beautiful and comfortable as possible. You can find the full range in XS-XL.

See the rating.

Shop Underprotection.

Shop Underprotection @ Curate.

Shop Underprotection @ LVR Sustainable.


Rated: Good

The Swim Shorts – Ships internationally from Sweden

ASKET has been creating timeless wardrobe essentials since 2015 with revolutionary sizing and fair pricing. The brand disregards seasonal collections, cuts out all the middlemen, and only sells directly to you—putting its entire focus on building a single permanent collection. Find the range in sizes XS-XL.

See the rating.


Looking for more swimwear inspiration? Have a look at our favourite sustainable bikinis.

Editor's note

Feature image via Mara Hoffman, all other images via brands mentioned. Good On You publishes the world's most comprehensive ratings of fashion brands’ impact on people, the planet and animals. Use the Directory to search more than 3,000 brands. To support our work, we may earn a commission on sales made using our offer codes or affiliate links.

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