More Sustainable Fashion Brand Offers This March 2026

See the rating.

Shop WIld Clouds.

COSSAC is a Spanish brand that believes in creating timeless, feminine, and versatile apparel responsibly. It promotes the minimalistic concept of capsule wardrobes, offering contemporary classics intended to be worn and cherished beyond seasonal trends. It uses organic or lower-impact materials and works exclusively with small factories on limited production runs to minimise waste and deadstock.

Find most of the range in sizes S-L.

See the rating.

Shop COSSAC.

Shop COSSAC @ Earthkind.

HERTH is an Italian lifestyle brand whose design philosophy combines sustainability and ethics with timeless aesthetics. It promotes slow fashion creating contemporary pieces characterised by clean silhouettes with meticulous attention to detail. Crafted by local Italian artisans with lower-impact materials, it embodies effortless luxury.

Find the range in XS to 2XL.

See the rating.

Shop HERTH.

Patagonia is a brand that truly lives and breathes the great outdoors. It makes clothing for trail running, climbing, mountain biking, surfing, skiing, and snowboarding. Patagonia has “Good” labour practices, and uses recycled, rather than virgin, polyester. It has also committed to reducing its energy use and emissions.

The brand stocks sizes 2XS-3XL.

See the rating.

Shop Patagonia second hand @ Retykle.

Shop Patagonia.

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.

POPLINEN is an LA brand that specialises in more sustainably made basics using plant-based materials.

Find items in sizes XS-L.

See the rating.

Shop POPLINEN.

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.