BarzOptics produce a range of polarised sunglasses in two lens materials that are great for fishos. The lenses are a sandwich construction with the polarising filter between the front and rear lenses. The polycarbonate lenses are treated with a hard coating to reduce the likelihood of scratching.BarzOptics sunglasses are designed to fit a large range of face shapes and sizes.All BarzOptics sunglasses frames have a twelve month warranty against faults from manufacture. Replacement lenses are available at a reasonable cost, and some frames can be fitted with prescription RX lenses. All glasses are supplied with a neoprene case and neoprene floating head strap.