Diesel Fresh And Bright Underwear UMTK Simon Vest In Red, A stretch cotton modal vest t shirt with a contrasting light grey marl trim to the low round neck and arm holes. A signature Diesel Only The Brave logo is printed on the chest in white. Top stitching in white. 57% Cotton, 38% Modal And 5% Elastane. The Brand New Stylish Fashionable Diesel Underwear, Boxer Shorts And Accessories Live Online AU.