Best sustainable swimwear fashion brands

NOW_THEN is an 'eco-luxury' brand handcrafted in Spain, associated with the ECONYL® project to recycle marine waste. Its fabrics are OEKO-TEX 100 certified, and it uses sustainable neoprene, replacing petroleum with limestone mineral.

Reset Priority is a Spanish swimwear and beachwear brand that uses high-quality recycled materials from Spain and Italy. Its fabrics are certified with OEKO TEX Standard 100 and Global Recycle Standard, and it also incorporates linen, BCI cotton, and deadstock fabrics.

Emociones swimwear is handcrafted in Gandía and made to order to avoid surplus, using recycled lycra collected in Spain and processed in Bilbao. This production model reduces waste and supports a local and sustainable supply chain.

Patagonia is a benchmark in sustainability and ocean conservation, with deep roots in labor ethics. Its swimsuits are designed to last for years, reducing the need for frequent replacement and promoting responsible consumption.

Underprotection DK is a Danish brand known for its minimalist designs and deep commitment to sustainability. It uses certified materials such as recycled polyester and nylon, TENCEL™, and organic cotton, and also holds B Corp, GOTS, OEKO-TEX, and GRS certifications.

OceanZen Bikini is an Australian brand renowned for its innovative use of regenerated nylon. This material is sourced directly from ocean waste, such as fishing nets and plastic bottles, transforming marine pollution into swimwear.

Belamer Co., based in Barcelona, stands out for its local production in Spain and the use of regenerated nylon from marine and post-consumer waste. Its materials are certified with OEKO TEX Standard 100 and Global Recycle Standard, ensuring sustainability and quality.

Summersalt is known for its swimsuits with a perfect fit, durability, and affordable prices, as well as its ethical production practices. It uses recycled fabrics that offer superior resistance and compression, with WRAP and BSCI certifications.

Reformation stands out for its 'chic and elevated' swimwear line, made with innovative and sustainable materials. It uses EVO, a bio-based polyamide made from renewable plants, and recycled nylon, offering elastic and soft-touch fabrics.

Vitamin A is a pioneer in the use of innovative and sustainable fabrics, with elegant designs and ethical production in California. It uses materials like EcoLux™ and EcoRib®, made from recycled nylon and plant-based fibers, and employs digital technology to reduce water consumption.

Galamaar focuses on transforming waste into durable and ethically produced garments. It uses ECONYL®, a fabric derived from nylon from discarded fishing nets, and manufactures its suits in a small family workshop in Los Angeles with fair wages.

Co-founded by Kelly Slater, Outerknown is a brand with a deep commitment to ocean conservation. It uses 100% recycled or renewable fibers throughout its swimwear line and offers full transparency about its suppliers and manufacturing processes.

Loop Swim stands out for its circular economy approach, offering sustainable swimwear made from recycled bottles that are also recyclable at the end of their lifespan. Its packaging is eco-friendly, and production minimizes water and energy consumption.

Banana Moon positions itself as a pioneer in sustainable swimwear with its eco-friendly 2026 collection. This line is produced with recycled polyamide from waste such as fishing nets and old carpets, reducing CO2 emissions and resource consumption.

Mara Hoffman is a pioneer in ethical fashion, recognized for her bold prints and commitment to recycled fabrics. Most of her swimwear is made from Econyl (recycled nylon) and Repreve (recycled polyester), demonstrating her leadership in sustainability.

Londre Bodywear has recycled over 1 million plastic bottles from Taiwan to turn them into high-fashion swimwear. Additionally, it offers a recycling program where customers can return their old suits to be transformed into new garments, promoting a circular economy.

I love be love offers elegant and timeless designs inspired by the Mediterranean, handcrafted in southern Spain. It uses premium Italian fabrics with ecological certification and eliminates unnecessary plastics in packaging, prioritizing recycled cardboard and compostable envelopes.

Volett, a brand from Bilbao, is committed to using organic and recycled materials, with responsible and sustainable production. It uses digital printing to avoid water consumption and ethically manufactures under fair trade practices, producing few units to prevent overstock.

Elena Morales, a brand from Gran Canaria, was the winner of the award for Best Sustainable Collection at GCSW 2025 and presented her Spring/Summer 2026 collection. Her recognition highlights her leadership in sustainable swimwear for the current season.