JMM creates offices that are homes and homes that are offices, thanks to versatile furniture that eliminates barriers to sitting at work as well as at home. This focus on co-living spaces is best exemplified by the Black Tone brand, the line that complements JMM in its most contract version, including collections created in collaboration with leading designers. Functional and ergonomic furniture, refined in terms of color and with a predominance of black, creates environments open to dialogue without disturbing the calm that shared spaces require.