18 Best Sustainable Swimwear Brands for Summer 2021

Sustainable swimwear is often hard to find, which is why a lot of shoppers end up getting fast fashion alternatives.

It’s tempting to do that, since they’re made of (supposedly) great materials, and will last for a multiple holidays…right?

Unfortunately, that’s not the case.

I know that, and so do you.

Most swimwear in fast fashion stores isn’t built to last. Made from materials that are low-quality and bad for the environment to boot, it ends up being an unwise purchase.

So rather than purchasing swimwear destined for a landfill after a few uses, why not look for some sustainable alternatives?

Whether you’re on a budget or looking to splurge, there are lots of great sustainable swimwear brands out there.

Brands we're going to look at:

With sleek silhouettes, modern designs, and bold looks, the brands we’re covering in this article have it all.

Let’s dive in.

Best Sustainable Swimwear Brands


Summersalt sustainable and inclusive swimsuits

Highlights: Recycled, eco-friendly materials. Women-led company. Inclusive sizing based on over 1.5 million body measurements.

Pricing: $$ – $$$

Size guide: 2 – 22 (with detailed fit guides available)

Summersalt are making stylish, flattering, amd comfy swimsuits from a range of eco-friendly fabrics. Despite the luxurious feel, their swimwear is made from fabric crafted with 78% recycled polyamide from post-consumer waste, and materials like old fishing nets.

The best thing about Summersalt is their inclusive sizing. The women-led company created their system sizing based on 1.5 million measurements taken from 10,000 women.

They offer detailed sizing guides to help you find the best fitting swimsuit. The result is a range of one-piece suits and bikinis that are super comfy, and stay in place.

The suits also offer UPF 50+ protection, and tests have found they they can withstand sand, sweat, and chlorine for 100+ hours without losing any support or shape.

Kitty and Vibe

Highlights: Willow swimsuit is made from 100% recycled materials, produced in family owned factory in Bogota, recycled packaging,

Pricing: $ – $$

Size guide: Top sizes: A-G, Bottom sizes: S1 – 3XL2 (two booty sizes for every hip size)

Kitty and Vibe is an ethical swimwear brand designing fun, good-looking swimsuits in NYC. The fabric is digitally printed and assembled in small batches at a family owned factory in Bogota.

Kitty and Vibe’s sizing options are as inclusive as possible, and is one of the best parts about this brand. For every hip size, they offer two booty sizes to ensure they have a suit for every body type to help you avoid the common sizing issues with most swimsuits, of either not enough, or too much material.

Their new Willow Vibe range is created using 100% recycled fabric, and also offers SPF 50+ sun protection.

It’s created using water-saving production methods, and dries quickly when you get out of the water.

Vitamin A Swim

vitamin a sustainable swimwear

Highlights: Vitamin A offers premium swimwear using recycled and plant-based materials, manufactured in the USA

Pricing: $$$

Size guide: XS-XL

Vitamin A offers transparency on how their products are made, where they’re made, and what they’re made of. Using recycled and plant-based materials, the brand has created a premium swimwear fabric, dubbed EcoLux™, to develop products.

The fabric was designed while working with the top mills in Italy, Canada, and California to create the recycled nylon fiber that’s being used across their swimwear garments. Other fabrics used are eco-conscious textiles such as organic cotton, linen, recycled cotton, and Tencel®.

Products are ethically made in California, and where that is not possible, factories are chosen for their female workforce and Fair Trade practices.

Each product comes with statistics to help consumers see how the product compares in terms of sustainability. Under each product page, there’s information on how many liters of water are saved, how many emissions are avoided, how much energy is saved, and how much waste has been diverted while creating that particular product.

Dippin Daisys

Dippin Daisy's sustainable swimsuits

Highlights: 95% of swimsuits from recycled pre and post-consumer nylon. Made in LA. Eco-friendly dying process. Biodegradable packaging. Female-founded.

Pricing: $ – $$

Size range: XS – XL

Dippin’ Daisy’s make a range of stylish and fun swimsuits, all crafted and created in LA.

The brand has implemented a variety of sustainable practices, such as using recycled materials in their swimsuits, recycled and biodegradable packaging, and an eco-friendly digital printing process that uses less water and ink than traditional dying.

They’re also on a 2-year mission to offer recycling program, as well as joining TerraCycle to close the clothing loop.


boden sustainable swimwear

Highlights: A well-established brand, Boden offers sustainable swimwear without sacrificing quality.

Pricing: $$

Size guide: UK 2-22 (US XXS-4XL

Boden’s swimwear is created in more substantial quantities compared to other brands in this list, but it’s done thoughtfully with a lot of consideration around environmental impact.

They’ve taken steps to ensure ethical manufacturing processes are being followed from inception to creation when it comes to their clothing. Each item purchased comes with a 365-day guarantee, reinforcing their purpose in creating functional and durable pieces.

The brand ensures their sourcing and packaging comes from responsible sources and have signed pledges to increase their accountability around how fabrics like cotton are sourced. Their swimwear line is created from regenerated nylon yarn derived from ocean waste. Boden is also involved in charitable causes such as female education and workplace support through HERproject.


Highlights: 100% of profits go to loans to empower women entrepreneurs. Sustainable fabrics, vegan.

Pricing: $$

Size range: S – XL

RubyMoon creates vibrant swimwear for women who want ethical swimwear that can be worn in or out of the water.

The brand uses ethical materials, including recycled ocean plastics. All of their materials and dyes are PETA-approved vegan, and OEKO-Tex certified.

RubyMoon also donate 100% of their net profits to women entrepreneurs in 11+ countries to help offer opportunities to those who need it most.


BASERANGE sustainable swimwear

Highlights: High-quality textiles and a clean production process are used to design modern pieces that have an effortless and chic silhouette.

Pricing: $$

Size range: XS-L

Baserange is all about innovation. The brand has been around since 2012, creating modern pieces that are all about elegant silhouettes and clean lines.

The brand focuses on working with vendors known for their innovation, and these relationships have yielded textiles with fantastic quality as well as a clean production process. 

Fabrics are created from both natural fibers and recycled content.

The production process aims at minimizing environmental impact and ethical working conditions.

Their swimsuits are generally made from 80% Polyamide and 20% Elastane, with Sun Protection Factor +50. All items of clothing are created under fair wages in Portugal as part of Baserange’s commitment to maintain sustainability and offer fair pay to factory workers.

Peony Swimwear

peony sustainable swimwear

Highlights: An independent family-run brand that focuses on conscious creation and sustainability across its designs

Pricing: $$$

Size guide: 6-14 (Australia), XS-XL equivalent

An independent family-run business, Peony creates gorgeous swimwear that’s all about bringing in some femininity and fun to the designs.

The current goal for the company is to be completely sustainable by 2021, and they’re already making good progress towards that.  Each of the designs are created with thought and care, both for the actual garment and its environmental impact. Peony creates swimwear pieces from recycled fabrics, both as the main design and as the lining. The swimwear styles are sold separately, so customers can easily mix and match pieces and pick something that works for their particular style and body type.

Swimwear generally contains a high percentage of  ECONYL®, regenerated nylon yarn created from the ocean, and landfill nylon waste. 

Textile prints for the swimwear are designed in-house and are entirely exclusive to the brand. For pieces that use custom textured fabrics, these are created in-house using Repreve®, a GSR certified recycled fiber. Unique and exclusive to Peony, each piece is one-of-a-kind and completely sustainable.

The commitment to sustainability also extends to packaging, as Peony uses compostable and biodegradable packaging throughout the manufacturing and delivery process. These are made from plant-based materials such as cornstarch and wheat to reduce the need for plastic and other toxic substances.


ookioh sustainable swimwear

Highlights: Nostalgic and timeless swimwear that is truly designed for “living your best life” and versatile enough for different uses.

Pricing: $$$

Size guide: XS-XXL

OOKIOH’s swimwear isn’t just swimwear. Whether you’re lounging by the pool or the beach, or running errands, each piece can be used across different functions.

Bodysuits can be used as a quick outfit for grocery runs, or bikini tops can be used with other summer pieces such as shorts and skirts for a fun look. Their swimwear is fun and exciting, designed for traveling and spontaneity. Their pieces have sleek cuts, minimal colors, and interesting detailing. Mix and match pieces or buy as a full set, there are options for everyone.

Fabrics for the swimwear line are sourced from Italian mills and are made from 100% regenerated materials using ocean and consumer waste. The brand aims to ultimately reduce their carbon footprint by eliminating plastic from its supply chain over the next few years.


sezane ethical swimwear brand

Highlights: Ethereal and feminine French brand Sezane’s swimwear is functional, beautiful and eco-conscious

Pricing: $$$

Size guide: EU 34-44 (US XS-XL)

Like Boden, Sezane produces garments in larger quantities but does so with a conscience. 70% of the materials used throughout their collections are eco-responsible. The company has obtained three key certifications for eco-friendliness (GOTS, Oeko-Tex, FSC®) and continue to work towards improving this. The brand has also recycled more than 12,000 pieces of clothing to date. 

Within the past three years, the brand has been able to increase the proportion of eco-friendly materials used across their clothing by using organic cotton, certified materials, and recycled polyester. All packages are shipped in boxes made from recycled cardboard and/or coming from sustainably-managed forests.


ARO Swim

Highlights: Up-cycled and recycled materials from other factories’ waste, compostable packaging

Pricing: $$

Size range: XS – L

ARO is a sustainable swimwear brand with a core focus on sustainability.

All of their materials are sourced from deadstock or unused fabrics that would otherwise go to landfill.

As well as that, they partner with their factories to provide fair wages and working conditions to their employees.


evarae sustainable bikini

Highlights: Luxury and beautiful design meet in these elegant swimwear pieces. And with each order, a tree is planted.

Pricing: $$$ 

Size guide: XS-XL

It’s evident in each EVARAE collection that there is a clear vision and purpose behind each item.

The brand brings together luxury and design, focusing on fit and aesthetic without losing that sustainable touch. For each order placed online, a tree is planted, and 2% of all online sales are donated to different charities that rotate every month.

All of the swimwear is made in Italy by a family-run business in Rimini. Portions of the 2020 collection are made from a silky recycled yarn to further instill a mission of sustainability across the brand. Resort Wear is made from 100% Silk or Cotton. All prints are designed in-house and created ethically in an Indian factory using traditional techniques. 

Casa Raki

Casa Raki swimwear

Highlights: A London-based independent boutique that focuses on thoughtful fabric choices and designs to create eco-conscious swimwear

Pricing: $$$

Size Range: XS-L

Casa Raki’s commitment to sustainability shines through in every aspect of their business.

A small and independent boutique brand, all items are designed in London and ethically created in a female-owned and operated factory in Portugal. 

Inspired by South America, the brand focuses on creating gorgeous swimwear that doesn’t negatively impact the planet. The company partners with companies, mills, factories, and people to produce garments as eco-consciously and ethically as possible.

Their commitment to sustainability is reflected in their fabric choices.

From labels to fabric, all designs include recycled nylon or recycled polyester, as do the linings of their swimsuits.

The company mainly uses ECONYL®, an innovative and eco-friendly fabric that turns waste into resources. The material is created from items such as industrial plastic, waste fabric, and fishing nets to produce new nylon yarn used in Casa Raki’s swimwear. Other fabrics include 100% GOTS certified organic linen and a completely renewable resource yarn, sourced from Castor Bean.

Medina Swimwear

medina ethical swimwear

Highlights: A truly luxe swimwear brand that’s both ethical and eco-conscious

Pricing: $$$$

Size guide: XS-L

Like Casa Raki, Medina swimwear also uses waste-to-wear fabric ECONYL® regenerated nylon for its swimwear. UV-proof, sun cream, oil, and chlorine resistant, Medina Swimwear items are designed to last and follow a commitment to reduce environmental impact.

The company also ensures that a percentage of purchase has a charitable initiative attached to it by supporting a variety of causes.

Each season, Medina Swimwear chooses a different non-profit organization or project that is committed to cleaning the ocean. Working with nonprofits such as The Ocean Cleanup Project and  Restore Coral, the brand focuses on creating ethical and sustainable swimwear with a purpose.


rendl sustainable swimwear

Highlights: Signature details and design elements is what makes Rendl swimwear sustainable and unforgettable.

Pricing: $$$

Size guide: S-XL

Rendl pieces are designed to be contemporary, a fusion of sporty, and functional to create a signature Rendl designed swimsuit. Each detail in design, form, and construction is thoughtfully chosen to be minimal and sleek, yet environmentally and socially aware.

Signature Rendl design elements include square necklines, color-blocking, and streamlined silhouettes, making each piece incredibly distinctive. The brand also offers modest swimsuits to accommodate a variety of body types and needs.

The swimwear is created from Italian material  ECONYL®. The material is quick-drying, featherlight, chlorine resistant, and UV protective, making it the perfect choice for lazing by the beach. The swimwear is made in Bulgaria and features 82% Polyamide (regenerated*) and 18% Lycra as its fabric content.

Stay Wild Swim

Staywild sustainable swimwear

Highlights: Creating swimwear with a purpose, Stay Wild’s small-batch swimwear is flattering and eco-friendly

Pricing: $$

Size guide: UK size 6-18 (US XS-XXL)

Stay Wild’s swimwear is about creating beautiful pieces that serve a larger purpose. Passionate about the environment and ocean conservation, the brand is committed to creating functional swimwear that protects the planet.

Using ECONYL® regenerated nylon, ocean waste is turned into yarn by an Italian mill. Evaluated for its high quality, durable and sustainable techno-fiber for performance swimwear, it’s the perfect match for Stay Wild. Created by Natalie Glaze  Zanna Van Dijk, all of the swimwear is produced in a small ethical factory in their home, London. The close proximity of the factory enables the team to have substantial involvement in the creation and production of their swimwear while also ensuring that the production process remains as sustainable as possible. 

The factory operates under industry ethical standards, fair wages, and has a zero-waste approach when producing swimwear.

Stay Wild only works with ethical suppliers, and have tried to remain as sustainable as possible in each element of their process. For example, packaging and tags are recycled and recyclable. Hygiene liners used in packaging are compostable and made using tree pulp, and their shipping is carbon neutral. It’s clear that sustainability has remained a consistent part of Stay Wild’s business model, and they take this responsibility seriously.


galamaar sustainable swimwear brand

Highlights: Los Angeles-made swimwear made sustainably and ethically with quality construction 

Pricing: $$$$

Size guide: XS-XL

Galamaar’s swimwear is bold, funky, and bright – truly matching the LA aesthetic where the products are created and manufactured. Keenly aware of the environmental impact of fashion, Galamaar is committed to ensuring its products change the status quo and usher in a new wave of sustainable fashion. The brand uses locally manufactured pad inserts, recycled hang tags, regenerated mixed metal hardware, and eco-packaging materials as part of their commitment to sustainability. Similar to other brands, they also use ECONYL® fabric to create their swimwear. This waste-to-wear ideology of using ocean pollution to create this fabric ensures that ocean pollution impact is decreased, without sacrificing quality. The material is durable and long-lasting. Combined with the Galamaar’s immaculate construction, it makes for a beautiful product that will last forever.

The brand is also one of the few that highlights its production and manufacturing team, so you can know exactly who is responsible for the garments and their working conditions. All products are created in  Los Angeles, California, at a small family-owned and operated facility. Information is available about the owners of the factory, as well as the employees on the website, so that you can learn more about how Galamaar’s products are made.


patagonia sustainable swimwear

Highlights: A familiar face in the sustainable fashion world, Patagonia is continually making strides in creating eco-friendly swimwear and setting an example in the broader fashion world.

Pricing: $$

Size guide: XS-XXL

Since the brand’s inception, preservation and conservation have been a foundation of Patagonia’s business model. The brand has pledged 1% of sales to the preservation and restoration of the natural environment since 1985. And over the years, donations and cash have been provided, totaling over $89 million to grassroots environmental groups. Patagonia’s clothing is created with a conscience, and their swimwear is no exception. 

The swimwear has a slip-resistant nanogrip lining for extra security, and all items are Fair Trade Certified™ sewn. Offering a variety of designs and cuts, Patagonia swimwear is designed for those that like to be active on the beach and want some extra coverage and security to go swimming and surfing without worry. Swimwear is created from recycled polyester derived from plastic soda bottles. Swimwear is made in certified Fair Trade factories to ensure garments are being designed ethically under fair wages.

Wrapping Up

When it comes to sustainable swimwear, it’s clear that there are a lot of brands out there that are genuinely making a difference. Each one featured here provides a great deal of information – far more than usual to underscore the commitment to sustainability they uphold. Using innovative and new types of recycled fabrics, ethical working conditions, and new forms of working to reduce carbon footprint, these brands are creating products with a clear conscience.

Paired with unique designs, unusual cuts, and beautiful products, this is a new way of shopping. Rather than opt for disposable swimwear, these brands offer products that can withstand the test of time. Created to be durable, functional, and built to last, swimwear from these brands isn’t just a purchase, it’s an investment into a product that you can use forever and does good for the planet too.

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