21 Sustainable Swimwear Brands You Can Feel Good About Buying

A stunning small swimwear brand, Ayla is making waves within the swimsuit industry. Working with two small boutique factories based in Bali, the founders are said to have close relationships with the suppliers, always working to avoid waste. This beautiful Scoop Back Swimsuit in Poppie Print (£125) is made from 78 percent REPREVE nylon — a fabric made from 100 percent recycled materials — and 22 percent Spandex, making it durable, long-lasting and, super stretchy to see you through years of body shape changes.

One of our favourite things about Everlane is its transparent pricing. It explains on the site that The Square-Neck Bikini Top (£55), for example, costs £3.33 in materials, £3.69 in labour and £0.19 in transport, with the majority of the cost coming from shipping duties. The style was fit-tested on a staggering 112 different women, meaning it should be a near perfect fit on almost every body type. And its composition is equally impressive, with every piece of the swim collection made from 82 percent of Econyl yarn — a regenerated nylon fibre made from discarded fishing nets, fabric scraps, carpet flooring, and industrial plastic — and 18 percent elastane. Pair with the The High-Rise Cheeky Bikini Bottom (£43) and take a look at the other colourways, too.

Working on the idea of a multiway bikini, Tucca Swim is hoping to reduce our need for dozens of different options. Again made from 78 percent Econyl regenerated nylon and 22 percent elastane, the reversible top and bottoms can be worn in a handful of ways to create different looks with just the one piece. We're partial to the pink colourway with one side of the Flamenco Fuego Multiway Bikini Top (£49) a beautiful bamboo print, and the other side a deep coral. Pair with the matching Flamenco Fuego Multiway Bikini Bottom (£49) to complete the set.

A great option for water-sports enthusiasts, this Tidal Xtra Life Long Sleeve Swimsuit (£110) is a fab option for wild swimming, diving, surfing, and snorkelling in the sea. Made from part-recycled xtra life Lycra, it's five times more durable than elastane, is chlorine, sun cream, and UV50+ ray resistant, and has an inner bust shelf for added support. See you on the board.

Frustrated with the lack of swimwear options for women with bigger busts, designers Carly and Stephanie created Form and Fold with bra sizes D+ in mind. All of the nylon used in the garments is from recycled preconsumer waste and the packageing is made from recycled materials, too. We love The Line Metallic Underwired D-G Bikini Top (£140) and The Rise Metallic High-Rise Bikini Briefs (£90). And remember, although these pieces have been made to last a lifetime, if you do end up growing out of them, you'll receive a 10 percent discount voucher for a replacement if recycling it at an approved Form and Fold centre.

Spotted all over Instagram as the latest sparkle-tastic swimwear brand, Oceanus pieces are just built for a beach party. Hand-stitched in London, the brand aims to provide a safe and fair environment for all workers. Econyl — the fabric made from recycled fishing nets and old nylon — makes up the majority proportion of each garment, and the embroidery beading is biodegradable. The brand is striving for a zero-waste business model, so all off-cuts are used to make face masks or small accessories. The Callie White Embellished One-Shoulder Swimsuit (£280) has caught our eye, but we'd more than happily wear any piece from the brand.

Sportswear giant Nike isn't the most sustainable option in this roundup, we know. But it is one of the bigger retailers who can really make a difference en masse when actively making positive changes. The Nike Colour Block Women's Crossover One-Piece (£44.95) is made from at least 75 percent recycled polyester, which is more environmentally friendly than virgin polyester found in some of its other swim products.

Made in London, this capsule collection swimwear range is a real joy to see. A certified B Corp, you can trust that this brand's credentials are thoroughly tested and held to an extremely high standard. Only working with ethical suppliers, using eco-friendly packageing, and ensuring workers are fairly treated, no stone has been left unturned. And, just as with The Nomad Bikini Top (£70) and The Nomad Bikini Bottom (£70) the majority of the collection is made from Econyl, too.

Possibly the most popular swimwear brand of the moment, Hunza G was created around the idea of no waste thanks to its one-size-fits-all crinkle fabric. Carbon-neutral and made in the UK, sustainable practices are at the heart of the brand. And while they admit they aren't perfect, they are always striving toward being better with both the people and planet in mind. A classic Square-Neck Crinkle-Knit Swimsuit (£155) has to be the suit of choice and is sure to see you through many a summer to come.

Spotted on two different Love Islander's this season, this Pour Moi India Recycled Tie Side Bikini Top (£26) and India Recycled Tie Side Bikini Brief (£22) is gaining some serious attention. Similarly to Nike, Pour Moi is a big brand churning out a lot of products, so it isn't the most sustainable option. But, made from 92 percent recycled polyamide, this is a healthier choice for the planet than others.

Working around Econyl, a favourite material within the sustainable swimwear industry, Masarà — meaning "soaking wet" in Milanese — has built a business model that boosts the local economy, reduces carbon emissions, and has minimal waste. This classic triangle Coco Bikini Top in Pistachio Green (£74) and Coco Bikini Bottom in Pistachio Green (£69) is top of our wishlist. Please note this brand is based overseas, with shipping to the UK £33 including duties.

For a classic black swimsuit that won't break the bank, we're turning to good ol' swim experts Speedo who are breaking away from that budgie smuggler image. The Women's Eco Endurance+ Medalist Swimsuit Navy (£26.50) is an update of one of the brands classic models, redesigned with the eco endurance+ fabric made from 50 percent recycled yarn. It's also 100 percent chlorine-resistant, meaning you have years of laps to go before thinking about swapping it in for a newer model.

Part of the Net Sustain edit on Net-a-Porter, Peony's swimwear is now recognised by big retailers for its conscious credentials. Made from Econyl, this Strapless Cutout Floral-Print Stretch-Econyl Swimsuit (£180) is equal parts sexy as it is sophisticated. Each piece is designed to transcend seasons, meaning it will never go out of style, and even the packageing is compostable, made using plant-based materials such as cornflour and wheat.

Thought to be one of the most sustainable retailers on the high street, Arket has a great range of swimwear, of course! Made from recycled polyamide, similar to the popular Econyl, this Seamless Bikini Top (£25) and Seamless Bikini Briefs (£19) set is a more environmentally friendly option than your standard high street bikini and is sure to make you stand out on the beach this summer.

Focussed on inclusive sizing, Summersalt also brings some environmentally friendly practices into its swimwear. The Split Wanderlust Bikini Top (£60) and The Split High Leg High Rise Bikini Bottom (£55) are made from recycled polyamide and elastane and, when washed by hand after each use, should last for many summers to come.

Made from 100 percent organic cotton — restricting the use of synthetic chemicals and genetically modified seeds, improving soil fertility, and better livestock management — Nanushka's simple yet small change can make an impact on the level of sustainability of its garments. The Animal-Stripe Bandeau Bikini Top (£173) and Abstract Stripe Bikini Bottoms (£143) are sure to be cherished for a lifetime. And, with an aim to be 100 percent sustainable, with full transparency and traceability across each component of the supply chain by 2025, Nanushka must be putting in some serious groundwork.

The beautifully printed Reese Adonia-print recycled fibre paddle suit (£168) is sure to turn heads with its standout design. Made from 78 percent recycled polyester and 22 percent spandex, it's not bad on the material front, and the brand also lists its whole supplier list on its site, citing it conducts regular checks and maintains a close relationship to ensure workers are fairly treated.

With shipping to the UK costing little more than a fiver (just watch out for import duties if buying a lot) Rendl also gets a feature on our list, giving the classic swimwear styles a subtle modern twist. Designed with every body shape in mind, it's made out of the fan-favourite Econyl, meaning each piece is fast drying, breathable, chlorine-resistant, and protects the skin from UV rays. Top No.10 (£76.08) and Pants No.3 (£59.17) have caught our eye the most, bringing Baywatch vibes in the red colourway.

Another Net Sustain approved brand, Fisch, has beautifully printed swimwear with some key eco-credentials to match. This Sucre Printed Stretch-Econyl Swimsuit (£171) is a true forever piece, subtly sexy at the back with a lace-up design, yet classic at the front with a high square neck. As the name suggests, it is made from 65 percent Econyl, and the fabric mill in which all Fisch fabric is made is located just two hours away from the factory, meaning less distance, fewer carbon emissions.

Working around three core principals — conscious making, circular material, and a clean ocean tax — Medina puts sustainable considerations at the heart of its operation. Made primarily from regenerated nylon, the Seaquest Swimsuit in Olive (£321.99) is certainly a standout piece, sitting between bondage babe and beachwear chic. Again, it does have to ship from Europe, so be sure to check any duties and taxes before buying.

Made from a plant-based polyamide sources from castor beans, Vitamin A is making huge strides within the eco-friendly fabric space. Of course, all garments come in biodegradable packing, and we just can't get enough of this gorgeous green Moss Bralet Top (£133) and Emmie Bottom (£138). And through a partnership with 1% For The Planet, the brand gives back a portion from every sale to organisations that protect our oceans. Another win.