Modus Vivendi celebrates 30 years of living and designing The Male way of life. The story of Modus Vivendi is the culmination of a Dream. A Dream to go beyond limited choices. The Birthday line draws inspiration from our Vision: to deliver a new experience in men’s fashion with the Male Way of Life. We want you to set new standards and express yourself and your diversity starting with your underwear. We break norms in fashion and bring fun in the design of men's underwear, leaving behind the traditional and plain boring underwear. Enjoy the logomania and dive into the much loved 90s trend. The Birthday Line comprises of boxers, briefs, jockstraps, shorts and tanktops.