The SO-one chair line allows for combining two different upholstery colors, which can highlight the character of an office space. The chairs feature horizontal stitching on the backrest, adding to their visual appeal. They are designed to adjust to each user, providing optimal working conditions. Key features include a double-sided upholstered backrest, 2-D and 4-D adjustable armrests, a contoured backrest, a free float mode, and a backrest lock with five positions.