• Frames are made from high grade metals for durability and strength
• Completely nickel free to EU Standards-thus no allergic reactions
• Coated with a varnish made from epoxy to ensure no rust "spotting"
• Base plating of palladium on copper
• Fresh gold classic galvanic treatment (galvanic coating is a plating technique to ensure gold coating treatment is of highest possible standard)

Dirty Dog Polyfilter lenses

• Decenterised for visual perfection
• Provide 100% protection from damaging UVA and UVB rays
• N.B: UV Block measured to 400Nm exceeding US AND EU standards Which measure to only 380Nm. provide up to 90% visible light block, outstanding in high glare environments
• Constructed from lightweight polycarbonate, renowned for its superior strength, impact resistance and protection
• Distortion free for maximum clarity of vision
• Provide up to 70% infrared (heat) protection
• Won't warp, mirror lenses provide additional glare block in harsh light environments, skiing and on water