It's in the fabric: Inspiring Denim underwear. If you're not scared to enter a new fashion territory, Modus Vivendi has you covered. The Modus Vivendi Jeans Boxer features a denim boxer with the Modus Vivendi vinyl printed logo, thermal embossed on the waistband. The checkered panels at the front continue smoothly on the back like a belt, offering a cowboy look. Choose Jeans underwear if you want to make more of a statement.