Based in Berlin, designer Rosa Marga Dahl founded SF1OG while studying fashion in university. From her use of antique textiles to the name SF1OG—a reference to the brand's origins in her one-room flat—Rosa frequently pays homage to history. SF1OG sports 3 distinct product lines—101, 013, and 133. Each variation explores material variability: the 101 line uses repurposed materials, the 013 line uses sustainably-crafted fabric, while the 133 line is an exploration of accessories and jewelry. All three lines contribute to SF1OG's reputation as a bastion of German craftsmanship and sustainability.