IIMAR Strataglass Protective Polish (#302) is a polymer based product specifically formulated to safely clean, polish and protect Strataglass and the Strataglass scratch resistant protective coating. The trade secret ingredient is the molecular bonding that creates a nearly invincible protective barrier against the damaging effects of marine environment pollutants. IMAR Strataglass Protective Polish is good for all clear vinyl?s and is recommended for use every 2 to 3 months.