Diesel Hoppyn Dress in Blue. Size L, S, XS. 85% nylon 15% elastane. Made in Bulgaria. Machine wash. Unlined. Pull-on styling. Lightweight jersey fabric. Italian based line, Diesel, was started in 1978 by Renzo Rosso. Known for their modern denim washes and fits, along with their urban styles outerwear, Diesel has found a place in so many closets around the world.