The Hi-Vision LongLife lens coating – as clear and durable as a diamond. Hi-Vision LongLife quite simply is a more protective and anti-reflective coating for lenses. Sand, dirt and even cleaning actions can leave tiny scratches on lenses, which can significantly reduce the wearer’s vision. Hi-Vision LongLife is up to 50% more resistant to these scratches (Colts Laboratories, 2009) than other coatings. Thanks to its anti-static coating, Hi-Vision LongLife is extremely resistant to dust; the lenses’ water and dust-repellent properties mean they are incredibly easy to clean. The excellent anti-reflective nature is a guarantee for crystal-clear vision.