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More Sustainable Fashion Brand Offers This December 2025

Words: Partnerships Editor

Category: Top Picks

Published: 14 Dec 2025

Every week we publish offers and discounts from highly rated brands that have been assessed by our rigorous ratings system. Using our codes and links may earn us a commission—supporting the work we do. Learn more.

Good On You believes everyone should have access to more sustainable and affordable options when they need to buy something new. That’s why we share exclusive promotional offers from our network of more sustainable fashion brands, which have all been rated “Good” and “Great”. We update these offers every Wednesday to ensure you’re only seeing active promotions—this helps you find the best prices from some of our best-rated brands, and it gives us a means of highlighting and supporting their work, too.

Codes and offers from more sustainable fashion brands

Infantium Victoria

Offers

Infantium Victoria – Site-wide

More sustainable, vegan, beautifully crafted kidswear—made to last and perfect for gifting. Ethical holiday pieces for little ones you love. Exclusive 20% off with code INFANTIUMLOVESGOY20 (Ends: 19 DEC)

Checkout code: INFANTIUMLOVESGOY20

Infantium Victoria offers beautiful vegan luxury for all ages. This German brand scores highly across the board. Its products are certified by Global Organic Textile Standard (GOTS), and it sells previously owned products to minimise textile waste.

Find clothes for babies ages 6 months all the way to teens aged 16 years.

See the rating.

Shop Infantium Victoria.

Frske

Offers

Frske – Jackets (AU)

Women’s jackets with relaxed structure and refined detail, fashioned in premium natural fibres for comfort, durability and style. 50% off a Brittany 3/4 sleeve cotton tee with every full priced jacket with code FRSKE_HALF_PRICE_TEE (Only available in Australia. Limit one per customer.) (Ends: 19 DEC)

Checkout code: FRSKE_HALF_PRICE_TEE

Frske is an Australian womenswear brand whose design principles are grounded in utility, lower impact materials, soft silhouettes, and quality over quantity.

See the rating.

Good Citizens Eyewear

Offers

Good Citizens Eyewear – Reading glasses

100% recycled and repairable frames with premium lenses. Exclusive $20 off reading glasses with code GCGY20 (Minimum spend $117.) (Ends: 25 DEC)

Checkout code: GCGY20

Good Citizens Eyewear – Prescription glasses

100% recycled and repairable frames with sun or clear lenses. Exclusive $20 off prescription glasses with code GCGY20 (Minimum spend $117.) (Ends: 25 DEC)

Checkout code: GCGY20

Good Citizens Eyewear – Sunglasses

100% recycled and repairable frames fitted with premium lenses for 100% UV protection Exclusive $20 off sunglasses with code GCGY20 (Minimum spend $117.) (Ends: 25 DEC)

Checkout code: GCGY20

Good Citizens Eyewear is an Australian label that offers eyewear made from 100% recycled single-use plastic bottles

See the rating.

Shop Good Citizens Eyewear.

Théla

Offers

Théla – Site-wide

Joyful, functional, and easy bags and accessories designed to be with you everyday and on every occasion. Buy 2, get 10% off. Buy 3 or more, get 15% off. Buy 5 or more, get 25% off. (Ends: 25 DEC)

Greek brand Théla creates handcrafted fashion and lifestyle accessories with plastic waste. Witnessing the increasing reliance and problems around disposable plastics and over-consumption, founder Diti Kotecha is on a mission to inspire change, diverting plastic from filling landfills, polluting oceans, and harming wildlife. It crafts pieces using lower-impact materials working with partners from disadvantaged communities, and is entirely vegan.

See the rating.

SukkhaCitta

Someone in a gorgeous, flowing gold dress by SukkhaCitta.

Offers

SukkhaCitta – Site-wide

This gifting season, curate your mindful gifts with handcrafted ready-to-wear and accessories by women Indonesian artisans in rural villages. Free upcycled notebook with a minimum purchase of USD 350 (Ends: 28 DEC)

SukkhaCitta is a certified B corp brand from Indonesia creating timeless modern heirlooms leveraging heritage crafts.

Find the range in sizes XS-L.

See the rating.

Shop SukkhaCitta.

SeamsFriendly

Offers

SeamsFriendly – Reversibles and Convertible Clothing

Double your options with one garment. SeamsFriendly’s reversible and convertible pieces offer multiple looks in one item. Exclusive 15% off with code SF-GY15 (Sale items excluded.) (Ends: 28 DEC)

Checkout code: SF-GY15

SeamsFriendly – Most Loved Styles

Dresses, jumpsuits, shirts and more, custom-made by skilled artisans, to your measurements and style preferences. Exclusive 15% off with code SF-GY15 (Sale items excluded.) (Ends: 28 DEC)

Checkout code: SF-GY15

SeamsFriendly – Jumpsuits and Rompers

No more short sleeves or awkward lengths. Made from all-natural fabrics that are gentle on the skin. Exclusive 15% off with code SF-GY15 (Sale items excluded.) (Ends: 28 DEC)

Checkout code: SF-GY15

SeamsFriendly – New Arrivals

Customizable clothing that’s handmade by our artisans to your body measurements and style preferences. Change the neck style, sleeve length, fabric, and more. Exclusive 15% off with code SF-GY15 (Sale items excluded.) (Ends: 28 DEC)

Checkout code: SF-GY15

SeamsFriendly – Customizable Clothes for Girls and Teens

Well-made custom clothing that’s crafted with skin-friendly natural materials. Exclusive 15% off with code SF-GY15 (Sale items excluded.) (Ends: 28 DEC)

Checkout code: SF-GY15

SeamsFriendly – Men’s Shirts and T-Shirts

Menswear that fits your body, whether you’re tall, short, or anywhere in between, experience the confidence of made-to-measure attire. Exclusive 15% off with code SF-GY15 (Sale items excluded.) (Ends: 28 DEC)

Checkout code: SF-GY15

SeamsFriendly creates beautiful tailored pieces for all body types. It focuses on function and utility in its designs and uses lower-impact materials like organic cotton and linen. What’s more, shoppers can customise the brand’s designs to their exact preferences—change the neck style, depth, sleeve length, garment length, fabric, and more on anything in its array of clothes.

The brand’s product sizing is customisable (for womenswear: bust size range 26″-70″, waist size range 19″-63″, including petite, regular, and tall heights; and for menswear: chest size 34″ to 76″ and above with free custom sizing) to ensure you always find the perfect fit. There’s a kids range (bust: 18″-28″, waist: 19″-26″) available too.

See the rating.

Shop SeamsFriendly.

The Classic T-Shirt Company

Offers

The Classic T-Shirt Co – Site-wide (US)

T-shirts that bring together quality and integrity. Free shipping applied automatically at checkout. (Only available in the US.) (Ends: 31 DEC)

The Classic T-Shirt Company is a US brand that creates premium, responsibly made t-shirts with luxury and integrity. All of its products are made from GOTS certified organic cotton and it doesn’t use any animal-derived materials.

The Classic T-Shirt Company’s range is available in US sizes XS-3XL.

See the rating.

Shop The Classic T-Shirt Company.

Vottera

Offers

Vottera – Site-wide (US)

Regenerative Organic Cotton t-shirts, polos, hoodies, sweatshirts and beanies. Clean, soft, and effortlessly comfortable. Exclusive 20% off with code VOTTERAGOOD20 (Only available in the US.) (Ends: 6 JAN)

Checkout code: VOTTERAGOOD20

Vottera offer beautifully crafted and ethically produced apparel made from Regenerative Organic Certified cotton.

See the rating.

Terra Thread

Offers

Terra Thread – Site-wide

Organic cotton backpacks, bags, and towels. GOTS and Fair Trade certified. Exclusive 15% off with code TERRATHREADGOOD15 (Ends: 6 JAN)

Checkout code: TERRATHREADGOOD15

Terra Thread makes backpacks, bags and apparel using lower impact materials, including GOTS and fairtrade certified organic cotton, and its suppliers are all Fair Trade certified.

See the rating.

Shop Terra Thread.

ZEROBARRACENTO

Offers

ZEROBARRACENTO – Site-wide

Seasonless garments, at the same time armor of invincibility and protection, are designed for longevity, on an idea of connection and durability. Exclusive 30% off with code 30XGOODONYOU (Ends: 9 JAN)

Checkout code: 30XGOODONYOU

ZEROBARRACENTO is an Italian brand that creates zero-waste clothes that celebrate the personality of those who wear it.

You can find most pieces in sizes S-L.

See the rating.

Shop ZEROBARRACENTO.

Editor's note

Feature image via Unsplash, other images via brands mentioned. Good On You publishes the world’s most comprehensive ratings of fashion and beauty brands’ impact on people, the planet, and animals. Use our directory to search thousands of rated brands.

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