The Knoxville XL Sunglasses from Electric feature 6-base melanin infused polycarbonate lenses that provide 100% UV protection and up to 98% blue light protection. A 3 barrel stainless steel optical hinge completes the package. Electric Sunglasses are made in Italy and offer a one year guarantee against manufacturer's defects. All Electric lenses provide 100% UVA, UVC and UVB protection, are distortion free, optically correct and shatter resistant.