Hasan Koca, who pioneered unisex design in Turkish fashion by bringing men’s and women’s wear together in the same collection, continues his tradition with new additions in every collection. The young designer mainly uses natural fabrics. He is also introducing a new conception of sewing by using nuts and bolts instead of thread in his leather accessories. Geometric forms in his collections  that become one with the designer occupy a significant place. Fabrics of the same or different kind bring discipline to the form of the design by creating layers. Natural woven or knitted fabrics are used in designs whose theme is made up of cool colors such as grey, black, and navy blue. The designer also includes orange in his collection and spreads his idea of ‘timeless design’ into all four seasons. Hasan Koca, who found his inspiration from construction sites, marble quarries, and natural formations, states that he ‘built up’ his designs like an architectural structure.