This is the maintenance product manufacturers recommend most. Only '303' beautifies as intensely, protects as powerfully or lasts as long. Powerful UV screening protection for colored gel-coat fiberglass, inflatable boats, vinyl, clear vinyl windows, rubber, plastics & leather. Spray on/wipe dry. Treated surfaces repel dirt, soiling, staining, water spots, salt water and mildew. Non-toxic & environmentally safe.