Ensure your goggles are cleaned before applying a final coat of NUPROL Anti-fog Spray. The 100ml bottle is of an excellent design, strong, visually appealing to look at with the neon Blue liquid and also features a gripped base to the nozzle pump and a directional arrow. You only need 2 sprays at most to clean then protect your lenses. The spray is also anti-bacterial, kills germs and maintains the lens quality. Less is more with this spray, use sparingly and make sure you use a microfiber cloth to apply and to remove any residue to add a protective film.