Zero Polyester.

Premium Underwear, Bras & Active Shorts for Boys & Girls

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600+ Happy Customers

Zero Polyester.

Premium Underwear, Bras & Active Shorts for Boys & Girls

Shop all

600+ Happy Customers

Nature-based softness, no polyester or nylon

OEKO-TEX® 100 certified – no harmful chemicals

Sustainable Small Aussie Business

Polyester & Nylon Free Underwear.

Reversible Racerback Seamless Bra Value Pack

Reversible Racerback Seamless Bra Value Pack

BEST SELLER

Reversible Racerback Seamless Bra Value Pack

6 reviews

Sale price  $89.95 Regular price  $99.95
Reversible Racerback Seamless Bra - Black/ Dusty Pink

Reversible Racerback Seamless Bra - Black/ Dusty Pink

BEST SELLER

Reversible Racerback Seamless Bra - Black/ Dusty Pink

5 reviews

$49.95
Reversible Racerback Seamless Bra - Pink/White

Reversible Racerback Seamless Bra - Pink/White

BEST SELLER

Reversible Racerback Seamless Bra - Pink/White

4 reviews

$49.95
Crop Bra Value Pack

Crop Bra Value Pack

BEST SELLER

Crop Bra Value Pack

1 reviews

Sale price  $89.95 Regular price  $99.95

KIDS Underwear. Polyester Free

Australia’s First Sustainable
Teen Bras & Intimates Brand

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Lightweight, breathable, and anti-bacterial

Sports Bras

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Lightweight, breathable, and anti-bacterial

First Bras & Crops

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Contour Bras

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Two pack of Lenzing Tencel™ Lyocell Boys Trunks

Underwear & Socks

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Two Girls wearing singlets and crop tops making a smoothie

Our Innovative Fabrics

(better than cotton)

We use innovative, nature-based fabrics like Lenzing™ TENCEL Lyocell, Lenzing™ Modal, and organic cotton - produced in closed-loop systems and certified to the highest sustainability standards, including OEKO-TEX® 100. That means no harmful chemicals, no toxins - just skin-safe comfort.

Unlike polyester and nylon, which are 100% fossil-fuel-based plastics that shed microplastics into your body and the ocean, our fabrics are naturally breathable, bacteria-resistant, and cool against the skin. No heat and odour-trapping synthetics - just better for you and the planet.

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For the Boys

Boys Trunks - 2 Pack

Boys Trunks - 2 Pack

Boys Trunks - 2 Pack

2 reviews

$29.95
Boys Organic Cotton Briefs (3 Pack)

Boys Organic Cotton Briefs (3 Pack)

Boys Organic Cotton Briefs (3 Pack)

1 reviews

$29.95
Everyday Skins (Boys) | Anti-chafe | Light Compression - Black

Everyday Skins (Boys) | Anti-chafe | Light Compression - Black

Everyday Skins (Boys) | Anti-chafe | Light Compression - Black

2 reviews

$29.95
Billie Green vs Other Brands
🩷 BILLIE GREEN
  • Nature-based, ultra-soft certified fabrics
  • Lightweight, breathable, and anti-bacterial
  • Minimal synthetics, gentle on people & planet
  • OEKO-TEX® 100 certified – no harmful chemicals
  • Designed to grow with you and last longer
  • Air out and wear again—only needs weekly washing
  • Naturally kind to sensitive skin
VS
❌ OTHER BRANDS
  • ×Made with fossil-fuel-based plastics
  • ×Traps sweat, heat and odour
  • ×Releases harmful microplastics into the human body and the environment
  • ×Often contains harmful chemicals such as PFAS and BPAs
  • ×Skimpy, fast-fashion designs that teens grow out of quickly
  • ×Needs washing after every wear due to odour
  • ×Can irritate sensitive skin