The Best Sustainable Swimwear Brands to Shop This Summer

Western summers hold some of the best swimming spots around—from rugged coasts to river-floats and everything in between. Whether you’re catching waves, lounging poolside, or chasing the sun on your next weekend escape, there’s no better time to invest in comfortable, stylish, and eco-friendly swimwear. These six sustainable Western-rooted brands make it easy to look good, feel good, and do good for the planet. 

Outerknown 

Founded by iconic surf legend Kelly Slater, Outerknown was launched solely with sustainability in mind. Their swimwear utilizes eco-friendly materials like ECONYL® regenerated nylon and spandex—recycling waste like fishing nets, carpets, and even their own old Outerknown products. With headquarters in Culver City, California and international sourcing and shipping, Outerknown partners with Fair Trade Certified™ factories and even offers a sourcing description for every product you’re interested in. Committed to putting the planet and people first, Outerknown produces swim gear built for sunny days, salty skin, and a cleaner future.

Courtesy of Outerknown

Reformation

Based in sunny Los Angeles and known for high-quality, sustainable fashion, Reformation makes eco-conscious swimwear feel effortlessly chic. Their women’s swim line—featuring one-pieces and bikinis alike—is crafted using plant-based, renewable, and recycled materials like regenerated nylon and bio-based fiber. With a goal of using 100% recyclable materials by 2030, Reformation is nearly there with 98% usage in 2024. Through their vintage-inspired looks, Reformation uses circular fashion efforts to ensure that each swimsuit not only flatters, but also allows consumers to enjoy their summer outings with a minimized environmental footprint. 

Courtesy of Reformation

Patagonia

Known for its iconic climate conscious ethos, Patagonia is always a confident choice for sustainable swim gear. Headquartered in Ventura, California, Patagonia has an endless, high-quality comfort swimwear line that utilizes eco-friendly materials and manufacturing. Patagonia’s swimwear is made primarily with recycled nylon and recycled polyester, reducing dependence on virgin petroleum fibers and lowering environmental impact. Patagonia uses their profits towards environmental and social progress, prioritizing safe and eco-conscious production methods at the global scale. Swimming in Patagonia won’t just look good—it’ll feel good too, knowing your purchase supports the planet while you enjoy nature’s swim holes. 

Courtesy of Patagonia

Mollusk Surf Shop

Based in San Francisco, Mollusk Surf Shop blends classic, laid-back California surf style with sustainability. With surf shops in Venice, Santa Barbara, and San Francisco, California, Mollusk offers an extensive male and female swimwear line, also available online. Their swim line is known for prime comfort and features a variety of options—from one pieces, bikinis, trunks, to surf-friendly styles. Mollusk supports locally crafted goods—with some styles cut and sewn in Los Angeles, and some knitted at a wind-powered factory in Mexico. Their eco-friendly approach and small-batch manufacturing efforts makes Mollusk a go-to for swim and beach gear this summer. 

Courtesy of Mollusk Surf Shop

Seea

Based in San Clemente, California, Seea is a women-led surf and swimwear brand with styles that fit all. Seea’s manufacturing is close to home, made at local sewing factories in California with a current company-wide use of 80% recycled materials—and the ongoing journey towards 100% sustainability. With material-conscious choices, the company is considerate of the environment in every aspect—including sustainable shipping and small batch production. Seea’s collection features bikinis, one-pieces, wetsuits, rash guards, and more—all focused on functionality and comfort. Their designs cater to diverse body types and lifestyle activities, making them a go-to for female surfers seeking stylish, sustainable options. 

Courtesy of Seea

Vitamin A

Based in Southern California, Vitamin A has been a pioneer in sustainable swimwear since 2000, blending a variety of styles with serious eco-credentials. The brand developed their original EcoLux recycled nylon swim fabric and never looked back—committing their brand to 100% recycled material production and shipping process and major water conservation efforts. With timeless designs and varieties, each swimsuit is made to last as you wear sustainability in style. 

Courtesy of Vitamin A

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