• COSSAC, founded by Agata Natalia Kozak, focuses on creating timeless, yet trendy garments that are ethical and sustainable. The brand promotes slow fashion with a commitment to transparency, sustainability, and social well-being. COSSAC’s collections are designed to celebrate the female body with versatile, transeasonal pieces, encouraging women to make mindful fashion choices without compromising style.

• COSSAC strives for transparency by showcasing their use of sustainable materials like organic cotton and Tencel, and by working with GOTS-certified factories in Portugal, ensuring fair wages and good working conditions.

• By producing in Europe, COSSAC reduces its carbon footprint and ensures better oversight of labour practices compared to many fast fashion brands.

• COSSAC has strong environmental initiatives, focusing on the use of sustainable materials such as organic cotton, Tencel, and Lenzing Modal. They also employ eco-friendly production methods like closed-loop processes and are committed to minimizing water usage and avoiding toxic chemicals.

• For each purchase made on their website, COSSAC plants a tree in collaboration with Ecologi, focusing on planting carbon-sequestering mangroves. Mangrove forests sequester carbon at a rate two to four times greater than tropical forests and provide critical ecosystem services.

The brand’s commitment to sustainable materials is evident in their seasonal collections, which focus on timeless designs that reduce the need for frequent replacements and promote slow fashion. COSSAC demonstrates a strong commitment to ethical and sustainable practices, particularly in the use of sustainable materials and environmental initiatives. While the brand excels in certain areas, there is room for improvement in transparency and detailed reporting on labour practices. By continuing to enhance these aspects, COSSAC can further solidify its position as a leader in sustainable fashion.