Overview Blue Base Lens: Category 3 Lens, CR-39, High Optical Clarity, Impact-Resistant, Lightweight, Durable General purpose sunglasses. High protection against sunglare. Good UV protection. Not suitable for driving at night or under dull light conditions. Not for direct observation of the sun. Case: Protective hardshell zip case and microfibre lens cloth included. Materials & Care Frame: Acetate Lens: CR39 Bundle & Save Build a bundle and save up to 15% off. Shop Bundle Builder HR40OVERVIEWA general-purpose pair with a Category 3 blue base lens for high protection against glare and good UV protection. CR-39 construction keeps it lightweight, durable and impact-resistant. Built for bright-day wear — skip it for night driving or dull-light conditions.BEST FORCategory: SunglassesSport(s): bothUse: trainingSPECS & FITMaterial: AcetateGender: unisexGOOD TO KNOWConditions: bright light; not for night driving or dull-light conditionsLens: Category 3 — high protection against glare, good UV protection