What are the optical properties of CR-39 lenses?

Category 3 — dark lenses for bright days (the most common category) ... Only sunglasses with a filter category of 0-3 are considered safe for driving. Item info. Cat-eye acetate-frame sunglasses in black. · Gray lenses · 100% UVA/UVB protection, category 3 · Integrated nose pads · Logo printed at temples Adults Category 3 Hiking Sunglasses MH140 ... Anti-UV lenses block out 100% of the sun's harmful rays and Category 3 protects you from glare. Thanks to their low ... Filter category:3. Suitable for prescription lenses:Yes. Join the Bvlgari Universe. Discover its magnificent icons, personalized services and unique ... Filter category 3 vs 4, Which UV rating to Choose? · Suitable for moderate sunlight conditions. · Provides basic protection against UV rays. · Appropriate for ... Category 3 (S3): 8% to 18% VLT. Category 3 sunglass lenses have a dark tint that makes them perfect for sunny days, whether you're on the beach, on a boat or ... sun protectionCategory 3 lens - 100% UV filter: perfect for sunny weather. lightweightOnly 26 g. stabilityTemple tips in flexible material: good retention ... Our optical engineers developed these sunglasses for hiking. Ideal for occasional use in the mountains thanks to their lightness. These dark lenses provide a lot of sun reduction and a good level of UV protection. While Category 3 lenses are ideal for outdoor sun protection, be sure to use ... Sunglasses (44) Sunglasses (44 products). Sunglasses (44) Sunglasses (44 ... CAT 3 (25) CAT 3 (25 products). CAT 0-2 (2) CAT 0-2 (2 products); CAT 1 (2) ...