Roto-molded, high-density polyethylene seat backs & bases are designed for comfort, good looks & durabilityVirgin foam with a 1.5 density & no fillers for lasting comfortFilm barrier between foam & vinyl allows quick recoveryHeavy-duty 28oz. marine-grade vinyl is mildew resistant & UV-treated to withstand fading6 years warranty on base3 years warranty on upholstery