JY Décennie Express was developed as a sans serif workhorse complement to JY Décennie. The basic roman design shares characteristics, and in some cases, characters (e, o, and others) with the serif version, making JY Décennie Express work particularly well with its progenitor. The design is friendly and approachable, as opposed to stark (the effect one usually has with Helvetica and other over-used typefaces). On closer inspection, straight lines blend into curves on the outlines: the characters are in fact complex but appear simple.