Pentax 1.60 & 1.67 UltraThin UV lenses are aspheric finished single-vision lenses featuring built-in UV protection and Surpass® AR with new EasyClean® Plus. This outstanding protective topcoating combines hydrophobic and oleophobic chemistry to provide ultra-high coating surface tension. The result is a lens that is extraordinarily easy to clean! Engineered for the best overall durability, Pentax Surpass ECP repels water, oils and grime, while preventing deterioration due to UV, humidity and normal temperature fluctuations.