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14 Jun

More Sustainable Fashion Brand Offers This June 2026

Feature image: Harvest & Mill.

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

Kotn

Rated: Good
two models in Kotn clothing

Offers

Kotn – Rugby

Crafted from 100% cotton, KOTN’s rugby sweaters are knit, cut and sewn in Canada by heritage jersey maker Barbarian. 15% off rugby sweaters. (Ends: 21 JUN)

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Certified B Corp Kotn is based in Canada and works with local NGOs on the ground at the Nile Delta to provide every child in their farming communities with quality education, and to help close the gap of low literacy rates amongst communities. With every purchase, not only will you get a beautifully made garment, but you’ll also help fund school infrastructure, materials, and salaries for teachers.

Find Kotn in sizes XS-2XL.

See the rating.

Shop Kotn.

Jiwya

Rated: Great

Offers

Jiwya – Site-wide

100% plant-based shirts, dresses, everyday jackets that breathe with your skin. Styles that speak with their silhouettes and their values. Exclusive 10% off with code JIWYAGOOD10 (First order only.) (Ends: 25 JUN)

Checkout code: JIWYAGOOD10
Shop now
Jiwya is a fashion brand using lower-impact plant-based materials, and heritage techniques including hand-spinning and hand-weaving.

See the rating.

Shop Jiwya.

Harvest & Mill

Rated: Great
Harvest & Mill sustainable socks pack in ivory

Offers

Harvest & Mill – Site-wide

Organic and non-toxic clothing, grown and sewn in the USA. Dye-free, bleach-free, made using plant dye colors. 10% off with code HARVEST10 (Ends: 28 JUN)

Checkout code: HARVEST10
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Harvest & Mill pieces are grown, milled, and sewn exclusively in the US, supporting American organic cotton farmers and local sewing communities. The brand makes basics for everyone, always ensuring they are not dyed or bleached, greatly reducing the use of water, energy, and dye materials. Even better, by cultivating different varieties of cotton, the brand is able to bolster biodiversity, which is essential for ensuring healthy ecosystems and keeping our planet resilient in the face of climate change.

Shop the range in sizes S-XL.

See the rating.

Shop Harvest & Mill.

The Summer House

Rated: Good

Offers

The Summer House – Site-wide

Beautiful clothing for dates, dinners, art evenings, and social moments – elevated, effortless pieces designed for small occasions. Exclusive 15% off with code GOODSUMMER (Ends: 28 JUN)

Checkout code: GOODSUMMER
Shop now

The Summer House – Shirt

A quiet statement shirt in caramel and cream stripes, featuring bishop sleeves that gather neatly into cuffs. Exclusive 15% off Shirt with code SUMMERTORI (Ends: 28 JUN)

Checkout code: SUMMERTORI
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The Summer House creates beautiful womenwear in India using locally made, lower-impact fabrics. It also partners with local artisans and NGOs to provide opportunities to those in the region. Look out for its elegant prints and flowing silhouettes.

Find the range in sizes XS-XL.

See the rating.

Shop The Summer House.

Aster & Oak

Rated: Good
baby girl wearing black and white floral print sustainable dress by Aster & Oak

Offers

Aster & Oak – Site-wide

From baby showers to birthdays, make every milestone an unforgettable moment and shop the best baby essentials, conveniently in one place. 40% off with code EOFY26 (Ends: 30 JUN)

Checkout code: EOFY26
Shop now

Aster & Oak is a West Australian brand that offers a unique collection of soft, certified organic cotton baby clothes and bedding.

See the rating.

Shop Aster & Oak.

Do Good Surf Club

Rated: Great

Offers

Do Good Surf Club – Site-wide (US, CA)

More sustainably made swimwear, surfwear, and lifestyle essentials for women who love the ocean and believe in making a positive impact. 10% off with code DOGOOD10 (First order only. Only available in the US and Canada.) (Ends: 30 JUN)

Checkout code: DOGOOD10
Shop now

Do Good Surf Club is a California based brand that provides affordable, more sustainably and ethically made swimsuits for every body. Made by surfers and for surfers.

See the rating.

Shop Do Good Surf Club.

Oobi

Rated: Good

Offers

Oobi – Full Priced

Colourful, comfortable and machine washable pieces for everyday wear, parties and special occasions. Exclusive 25% off with code OOBIGOOD25 (Sale items excluded.) (Ends: 7 JUL)

Checkout code: OOBIGOOD25
Shop now

Oobi is an Australian girl’s fashion, swimwear, homewares, and lifestyle brand. In addition to creating stylish clothes for children, the brand makes sure it uses low-impact non-toxic dyes throughout its range. It also uses no animal products and opts for sea freight to transport products to reduce its climate impact.

See the rating.

Shop Oobi.

Shop Oobi pre loved @ Retykle.

SeamsFriendly

Rated: Good

Offers

SeamsFriendly – Reversible and Convertible Clothing

The most sustainable wardrobe is a smaller one. These pieces flip, convert, and transform. Multiple looks from one garment. Handcrafted in natural fabrics. Exclusive 10% off with code SF-GY10 (Sale items excluded.) (Ends: 26 JUN)

Checkout code: SF-GY10
Shop now

SeamsFriendly – Most Loved Designer Styles

These styles have been custom-made for hundreds of women, each to her exact measurements. Not off-the-rack. Made by artisans, made when you order, made for you. Exclusive 10% off with code SF-GY10 (Sale items excluded.) (Ends: 26 JUN)

Checkout code: SF-GY10
Shop now

SeamsFriendly – Jumpsuits and Rompers for Women

Jumpsuits are impossible to fit off the rack. SeamsFriendly will make one that actually fits your body. Exclusive 10% off with code SF-GY10 (Sale items excluded.) (Ends: 26 JUN)

Checkout code: SF-GY10
Shop now

SeamsFriendly – Customizable Clothing for Women

Handcrafted to your exact measurements in natural fabrics. No inventory. Made only when you order. Only yours. Exclusive 10% off with code SF-GY10 (Sale items excluded.) (Ends: 26 JUL)

Checkout code: SF-GY10
Shop now

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.

Editor's note

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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