Diesel Ceruliux Flat Cap In Navy Heather, A wool mix with the classic flat top design and a stiff hard small front peak. Adjustable in size with a press stud button fastening on the back of the cap with additional velrco strap on the lining. The signature silver metal Diesel logo is attached to the front left side of the cap. Embroidered eyelets across the top of the cap in navy. 60% Wool And 40% Viscose. Part Of The Brand New Range Of Diesel Hats And Accessories Live Online UK.