This collaboration between Calsa Nagasaki and Kuzuri Keori celebrates the finest in Japanese menswear craftsmanship. Established in 1970, Calsa Nagasaki has mastered the art of trouser making for over half a century. Now introduced globally through The Refinement, the collection combines Calsa Nagasaki’s expert tailoring with Kuzuri Keori’s premium fabrics, creating refined high-rise trousers with a timeless, flattering fit.