World-Class NYDEF Nylon Lenses by Carl Zeiss VisionNYDEF Nylon lenses manufactured by Carl Zeiss Vision provide next-level quality and performance. NYDEF lenses use nylon material which significantly boosts clarity compared to polycarbonate lenses and compare closely to glass lenses. Nylon has an incredibly high material pureness, causing less light correction and greater overall clarity. The nylon construction offers a significantly clearer lens than polycarbonate with 18% less weight.Clearer Vision, Less Strain: The superior clarity of NYDEF lenses keeps your eyesrelaxed and focused on what’s in front of you.Complete UV Protection: Filters out 100% of harmful of UVA and UVB raysScratch and Impact Resistant: Keep your eyes safe and your vision distortion freeHydrophobic Ri-Pel Coating: Completely repels water, oil, sweat and dustSuperior Nylon Construction: Ultralight material offering high optical clarity and material purenessLearn more about NYDEF Nylon Lenses