TR90/NYLON66 Lens Nose Pads Hinges Frame High performance Karbon8™ optical class one. Impact  resistant. 100% UV protection and anti-scratch coating. Moulded nose pads to prevent slipping and improve comfort, fit and performance. Integral sport hinges for increased strength, fit and control. Strong and flexible TR90 and Nylon66 for greater stability, feel and fit. Tumbled in teakwood and Bamboo for flawless finishing.         Interchangeable Stealth       Lens Nose Pads Hinges Frame High performance one-piece Karbon8™. 100% UV protection and anti-scratch coating. Interchangeable moulded soft grip nose pad for a pressure free performance fit. Integral sport hinges for increased strength, fit and control. Ultra light super flex with carbon fibre for greater durability.         Lens   Hinges Frame High performance Karbon8™. 100% UV protection and anti-scratch coating.   Integral sport hinges for increased strength, fit and control. Ultra light supper flex with carbon fibre for greater durability.         Metals       Lens Nose Pads Hinges Frame Karbon8™ optical class one 6 base, allows optical correction and 100% UV protection with anti-scratch coating. Anti-slip silicone pads resistant to cosmetics and sweat. Spring hinges for a comfortable formed fit. Anatomic frame design, Nickel free with hypoallergenic coatings.         LENS CATEGORIES   CATEGORY 0 100-80% LIGHT TRANSMISSION. For extremely low light conditions.   CATEGORY 1 80-43% LIGHT TRANSMISSION. Transparent or slightly tinted for low light conditions. LENS: CLEAR and CITRUS   CATEGORY 2 43-18% LIGHT TRANSMISSION. Lightly tinted for medium to bright light conditions. LENS: ORANGE and HDL   CATEGORY 3 18-8% LIGHT TRANSMISSION. Heavily tinted for bright to extremely bright light conditions. LENS: VE5, B11, S11, G15F, BLUE MIRROR and RED MIRROR   CATEGORY 4 3-8% LIGHT TRANSMISSION. Very heavily tinted for exceptionally bright light conditions. Not recommended for driving.   LENS TINTS VE5 VERMILLION - CAT.3 The unique hue of this lens makes it a true all rounder, equally at home in the brightest conditions whether on mountain, street or beach. The grey content ensures natural colour transmission, allowing the vermillion to enhance red, green and yellow, whilst eliminating a high degree of blue light, thus increasing perception of detail and dramatically reducing eye fatigue. S11 SMOKE - CAT. 3 Transmits the full colour spectrum. It does not change the way colours are seen and is ideally suited for prolonged wearing in bright conditions and for people who have intolerance to colour transformation. B11 BROWN - CAT.3 Our brown lenses are excellent at cutting glare, working very effectively in varying light conditions and helps to reduce eyestrain. G15F GREEN- CAT.3 This green tint is truly the best all purpose lens, dramatically reducing eye fatigue in bright conditions and offering enhanced definition in lower light. HDL HIGH DEFINITION LENS- CAT.2 A high definition lens ideally suited for medium to bright light conditions. The light vermillion/violet tints help with contrasts against blue and green. Offering excellent definition in low light conditions with acceptable protection when bright. Ideal for sport played on grass particularly golf. RED MIRROR - CAT.3 Heavily tinted for bright to extremely bright light conditions. BLUE MIRROR - CAT.3 Heavily tinted for bright to extremely bright light conditions.   METAL OXIDE COATINGS (FLASH MIRROR) A metallic coating applied to the front of the lens, eliminating reflective glare and excessive light transmission. Colours include silver flash, gold, blue and green.     STANDARDS All Bloc Eyewear provides 100% UV protection, every style has been carefully designed for comfort and fit. Our rigorous testing program ensures this product exceeds all global standards including: UK - BS 2724 -1987; European - EN 1836 -1997; Australian - AS/NZS 1067 - 2003; and American - ANSI Z80.3 -1986.