The Polaria is built on an extruded aluminium frame with a cross beam on the roof for added strength. The aluminium is coated with baked-on enamel paint (white or beige) that will neither rust nor peel. The 22-ounce vinyl canvas has a lifespan of 15 to 18 years and remains installed year round. The canvas is treated against mould and requires no maintenance. Its vinyl panels are heat-sealed together to make the canvas that much more efficient. The Flash System, our patented non-lacing fastening system, allows you to apply the optimal canvas tension to the frame. The polymer windows can be easily removed to facilitate maintenance. We recommend cleaning them with a mild, non-abrasive soap diluted in a large quantity of water.