Dirty Dog ClankBlack / Grey Polarised LensesDirty Dog Clank's sleek wrapped frame is sporty and stylish. And these are polarised sunglasses. So they eliminate glare from surfaces like tarmac, concrete and water.Clank's polycarbonate lenses give incredible clarity and impact protection too.These men's sunglasses are crafted from lightweight grilamid TR90. It's astoundingly robust too. Bend its frame and it bends back into shape.Two specifically-developed hard coatings add durability and scratch resistance to Dirty Dog lenses. UV400 lenses. Dirty Dog sunglasses come with a one year warranty.