Briefs pack by Diesel, Pack of three, Contrast designs, Stretch jersey, Branded waistband, Form-fitting design, Machine wash, 95% Cotton, 5% Elastane. ABOUT DIESEL Founded by Renzo Rosso in 1978, Diesel has since become a part of global youth culture, with its pioneering new styles and creative design methods. Known throughout the world for their jeans, Diesel now boasts a full clothing and accessories line that embraces the label's inimitable laid back style.