Roto-molded, high density polyethylene seat backs and bases are designed for comfort, good looks and durability. Virgin foam with a 1. 5 density and no "fillers" for lasting comfort. Film barrier between foam and vinyl allows quick recovery. Heavy-duty 28 oz. marine-grade vinyl is mildew resistant and UV treated to withstand fading. Two position backrest. Anodized aluminum swing back arms. Soft touch 28 oz marine grade vinyl, loaded with UV & mildew inhibitors. Contoured cushions stuffed with OEM grade, high compression foam padding. Weather resistant, marine grade seat and back frame. High density, rotational molded bases - scuff and mar resistant. Hinged cushions provide spacious storage inside each seat base. 5 year warranty on frame/base. 3 year warranty on upholstery. Quality marine product. Limited warranty.