One long-familiar styling element was the split-grille design which was introduced in 1959 to complement the make's new "wide track" stance. The 1960 models, however, reverted to the full-width grille styling. The split-grille then returned for the 1961 model year and would remain as the marque's trademark. Other styling cues were the pointed "arrowhead" nose (in the 1960s and 1970s), and "grilled-over" (in the 1960s), or multiple horizontal-striped taillights. This later feature originated with the 1963 Grand Prix, and although the 1962 Grand Prix also had rear grillework, the taillight lenses were not behind it. Less longstanding but equally memorable is the "cladding" common on the doors and fenders of Pontiacs produced in the 1990s and 2000s. Rather than minimizing the side bumper, Pontiac designers put two troughs going along the length. Bumpers with this appearance were found on nearly all Pontiacs until the arrival of the G6. From 2004 onwards, new Pontiacs had cleaner, more premium styling, but retained the traditional split grille.