The 8 Best Sustainable Mens Swimwear Brands for 2024

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Finding the perfect pair of sustainable swim trunks can be difficult. First, you want a durable pair that will not fall apart after your first swim.

Secondly, it’s important your swim shorts are made ethically and from sustainable materials.

We’ve put together this handy list featuring the best sustainable men’s swimwear on the market. The brands featured here are creating high-quality swimwear from recycled materials.

Let’s dive in.

The Best Sustainable Swim Trunks

1. Patagonia

Patagonia recycled swim shorts

Highlights: Durable and sustainable men’s swim shorts made with recycled plastic and Fair Trade Certified™ sewn.

Styles: Sustainable board shorts in three lengths

Sizes: XXS-3XL

Patagonia’s recycled swim shorts are created to perform in the world’s best waves. The swim shorts lightweight design and contoured waistband ensure the trunks stay in place.

Patagonia’s trunks are created with recycled polyester from recycled polyester, saving over 50% of CO2 emissions than using virgin polyester.

Patagonia’s swim trunks are created in Fair Trade certified factories, ensuring ethical production and safe working for garment workers.

Patagonia sustainable mens swimwear

2. prAna

prAna sustainable mens swimwear

Highlights: Men’s recycled plastic swim trunks with organic cotton and sun protection to UPF 50+

Styles: Sustainable board shorts

Sizes: S-XXL

prAna is a sustainable clothing brand creating practical and durable outdoor gear for people on the move.

The brand’s sustainable swimwear range features recycled plastic board shorts and trunks with UV protection. Plus prAna’s swim shorts are quick-drying and come with a four-way stretch for extra comfort.

prana mens recycled plastic swimwear

3. Outerknown

Outerknown sustainable board shorts

Highlights: Ethical swim shorts and recycled swim trunks created with 100% post-consumer waste

Styles: Sustainable board shorts in three lengths

Sizes: XS-XXL

Outerknown’s founder Kelly Slater knows a thing or two about swimwear. The 11x professional surf champion has expertly engineered Outerknowns swim trunks for maximum performance.

Firstly, the Apex trunks are available in two styles, a sustainable board short with a 19″ outseam and stitch free design to eliminate chafing.

Secondly, the brand has created swim shorts from recycled plastic in the form of its Nomadic Volleys from 100% recycled polyester with Quick Dry.

Outerknown recycled swim trunks from recycled plastic

4. MeUndies

MeUndies sustainable swim trunks

Highlights: Men’s swim shorts made from recycled plastic bottles

Styles: Sustainable swim trunks in 6″ and 8″ styles

Sizes: S-4XL

MeUndies sustainable swim shorts recycles 8 plastic bottles per pair. In addition, the brand creates fun, vibrant prints, perfect for the pool, beach, or even relaxing in the yard.

The trunks feature a side and a back pocket, perfect for storing your phone or wallet and feature a hidden key loop.

MeUndies sustainable swim shorts

5. Urbankissed

Urbankissed sustainable mens swimwear

Highlights: Men’s swimwear from recycled plastics

Styles: Sustainable board shorts in three lengths

Sizes: XXS-3XL

Urbankissed is a sustainable online shop that focuses on the art of slow living. Each product featured goes through its “Slow & Ethical” Index that includes 15 values along the supply chain before making the cut.

The online marketplace offers a selection of cool swim trunks from sustainable brands, including Rivea swimwear, which creates recycled plastic swimwear from recycled plastic bottles removed from the sea and beaches of the Mediterranean.

Urban kissed mens recycled plastic swim trunks



Highlights: 100% recycled swim trunks made from recycled plastic and ocean waste

Styles: Sustainable board shorts in three lengths

Sizes: XXS-3XL

ASKET recycled swim trunks are made using a combination of recycled PET and Seaqual™ (a yarn made from the recovered ocean and coastal plastics).

The result is a pair of versatile swim shorts that you can wear in the water and casual shorts.

ASKET swim trunks are ethically made and come in three colors but are only available in one length.

ASKET sustainable swim shorts

7. Fair Harbor

Fair Harbor sustainable mens swim trunks

Highlights: Swimming trunks made from recycled plastic

Styles: Sustainable board shorts in three lengths

Sizes: S-3XL

Sustainable swimwear brand Fair Harbour creates swimming shorts for men from recycled material, including recycled plastic bottles.

The brand has the largest selection of swim shorts compared to the other brands listed here, with six lengths available in fun, vibrant styles.

In addition, Fair Harbours bold printed swim trunks come with a durable water repellent for super quick-drying shorts.

Fair Harbour mens recycled swimwear

8. Riz Boarshorts

Riz board shorts

Highlights: Swimming trunks made from recycled material and backed up with a lifetime guarantee.

Styles: Boardshorts and trunks in vibrant patterns

Sizes: S-3XL

Riz Boardshorts has been making sustainable swimwear for men from recycled fabric, made from recycled plastic bottles for over ten years.

The brand designs its swimwear in bespoke patterns, ensuring you’ll stand out at the beach.

The brand is a certified B corporation, meaning it meets high ethical and sustainable production standards. Plus, £1 from the sale of every pair of shorts is donated directly to the Marine Conservation Society.

Riz boardshorts

Wrapping Up: Sustainable Mens Swimwear

We hope you’ve discovered a handful of new sustainable swimwear brands created fantastic boardshorts and trunks from recycled materials. Pair with cruelty-free sunscreen and sustainable sunglasses for a cool summer look.

If you’re on the hunt for women’s sustainable bikinis and swimwear, check out our post here.

If you have any feedback, please let us know in the comments below.

The Ecothes Team
The Ecothes Team

Hi, we're the team behind Ecothes. We started this platform to help share the sustainable brands we discover, making products from clothing, to homeware, to sneakers.

Learn more about our team on our About page:

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