Crizal lens are one of the best lens with highly durable material. This is very long lasing. This lens is very easy to use and it can be clean by easily with the provided liquid cleaner. The comfort of using it is really amazing and it is very comfort when compare to the other lens. The shape of this lens is really unique which gives a unique style while wearing this lenses. They provide one year warranty for a a set of lenses. This is best value for money. It is available on different shades of color.