Who We Are


“We want to create timeless, yet trendy garments; beautiful, yet ethical.” 



 Who We Are

Each garment embodies the lifestyle, vision and values of COSSAC founder Agata Natalia Kozak

Our Capsule Wardrobe collections offer versatile, consciously designed transeasonal garments that celebrate the female body with timeless ease. Exploring strength in simplicity, each range brings a thoughtful edit of feminine pieces to help women find beauty in their wardrobes season after season, complementing their mindful lifestyle and creative freedom. 

COSSAC exists to offer women design-led honest fashion. We help drive awareness of the negative social and environmental impacts of our industry and make it easy for women to make better choices. 

While we take the concepts of sustainability seriously, we deal with all the heavy stuff so you won’t have to. COSSAC is committed to slow fashion with a focus on transparency, sustainability and social well-being. Our mission is to deliver balanced and concise collections made consciously with respect for every contribution along the way. 

The future of fashion is just, sustainable and #ECOHOT.