The Best Sustainable Swimwear in Australia: Your Complete Guide

The beach is a huge part of Australian culture, and with so much time spent by the ocean, swimwear in Australia has become an essential part of our wardrobes. From bikinis and one-pieces to surf suits, there’s no shortage of options. But beyond style and fit, there’s an important question to ask: Is your swimwear sustainable?

At The Someday Co, we’re passionate about creating a cleaner future and making it easy for Aussies to choose sustainable swimwear. This guide rounds up the best sustainable swimwear in Australia, why it matters, and how you can make a choice that’s better for the planet.

What Makes Swimwear Sustainable?

The key to sustainable swimwear is in the fabric. Traditional swimwear in Australia often uses nylon, polyester, and spandex. These are all plastic-based materials that take decades to break down.

Brands leading the sustainable activewear movement choose eco-conscious fabrics that reduce environmental impact. Here are some of the most common:

• ECONYL®: A regenerated fibre made from discarded fishing nets and nylon waste.
  Brands using ECONYL include Soulti Surf and Ocean Soul Bali.
  
  

• Carvico Vita: Made from ECONYL, this fabric is used by Bliss Boheme and Ocean Flo for unique patterned designs.
  
  

• REPREVE®: Created from recycled plastic bottles, used by Bliss Boheme and Aruba.
  
  

• Amni Soul Eco®: A biodegradable polyamide certified toxin-free, featured in Styelle Swim collections.
  
  

Ethical manufacturing is also a key factor. Fair wages, safe conditions, and transparent supply chains all form part of what makes sustainable swimwear in Australia truly sustainable.

Top Sustainable Swimwear Brands in Australia

At The Someday Co, we feature the best Australian brands creating stylish, eco-friendly swimwear. Here are some favourites:

• Bliss Boheme: Retro-inspired prints with sustainable fabrics.
  
  

• Aruba: Reversible bikinis are designed for maximum versatility.
  
  

• Styelle Swim: Bold, timeless pieces made with biodegradable fabrics.
  
  

• Soulti Surf: Bright, fun patterns for surf and swim lovers.
  
  

• Simpl Swim: Natural tones with supportive fits.
  
  

• Ocean Zen: Classic one-pieces and elegant swimwear styles.
  
  

• Lionel The Label: Sophisticated silhouettes for effortless beach looks.
  
  

• Indigo Swim: Fun patterns with performance-driven design.
  
  

• Toast Swim: Colourful cuts featuring flattering high-hip designs.
  
  

• Salt Gypsy: Effortless styles designed for adventure seekers.
  
  

• Ocean Soul Bali: Chic yet athletic suits for surfers and swimmers.
  
  

• Ocean Flo: Surf suits that balance performance, sun safety, and style.

Amazing swimsuits

“Amazing swimsuits, and great customer service. Happy to have found a sustainable collection that is stylish, fits well, and practical. Yay!”

Janine - 5 Star Customer Review 14 Mar 2025 

Tips for Choosing Eco-Friendly Swimwear That Lasts

Shopping for sustainable swimwear in Australia is simple when you choose The Someday Co. We only stock brands that meet strict sustainability and ethical standards.

To make your swimwear last:

• Choose timeless designs over trends that prioritise slow fashion rather than fast fashion.
  
  

• Rinse your swimwear in fresh water after every use to protect fabrics.
  
  

• Always read the care instructions on the garment to know how to correctly look after your sustainable swimwear.
  
  

 By following these steps, you will reduce waste and keep your eco-friendly swimwear in great condition.

Why Sustainable Swimwear and Activewear Matter

The rise of sustainable activewear and eco-friendly swimwear is about more than fashion. It’s about reducing plastic waste, supporting ethical production, and protecting the oceans we love. By choosing quality pieces designed to last, you’re helping create a cleaner future.

Shop Sustainable Swimwear with The Someday Co.

When you shop with The Someday Co, you’re supporting brands that care about the planet. We donate 1% of all sales to ocean-based charities, take part in clean-up initiatives, and champion eco-conscious design.

We offer free shipping in Australia on orders over $49 and $10 off your first order over $100 when you join our newsletter. Your perfect sustainable swimwear is just a click away.

Shop Now.