The Holbrook Metal uses the classic and highly popular shape of the standard Holbrook, but with a lightweight and durable stainless-steel frame. The lenses use Oakley’s market-leading Prizm technology ensuring you see in greater detail with crisp and enhanced clarity.Lens: This lens is suitable for bright light conditions with a tint that increases contrast. The base lens tint is grey. Prizm technology blocks specific wavelengths of light while boosting others to provide maximum contrast and enhanced visibility. This greater clarity results in reduced reaction times and increased performance over a wide range of light conditions.VLT: 17% (CAT 3) - Visual Light Transmission, VLT, refers to the amount of light that penetrates a lens. A low percentage means less light passes through and a higher percentage lets an increased amount of light through. FeaturesFit: Regular - Adjustable Nosepads Size: Large (lens width 55mm bridge height 18mm)Stainless steel frame is lightweight, durable and offers all-day comfort Three-Point Fit: Comfort and performance that holds lenses in precise optical alignmentHDO (High Definition Optics) lenses are impact resistant while letting you see with crystal clear clarityPrizm lenses optimise contrast and enhance color enabling you can see in greater detailPlutonite lens material provides UV Protection filtering out 100% of all UVA, UVB up to 400nm Comes complete with a microfibre cleaning cloth