Specifications: - Frame Material: grilamid TR90 - Lens Material: photochromic - Lens Category: 0~3 - Hard Case: Yes Technology: Uv Protection Lens: - UV400 filter blocks all light rays with wavelengths up to 400 nanometers to guarantee 100% protection against UVA, UVB and UVC radiation. All GOG sunglasses and ski goggles are equipped with UV400 lens filter to protect eyes from harmful UV radiation. Polarized G-lens: - Polarized lenses block irritating glare from light reflecting off flat surfaces eg. road, water and snow. These advanced lenses are perfect choice for all types of outdoor activities on bright sunny days. Lenses with polarized filter improve visual clarity and color contrast to enhance visual comfort and increase safety of the user. Polarized lenses reduce eye strain. Reflex G-lens: - Mirror coating on the outer surface of the lens recommended in heavy sunlight. It provides increased eye protection against harmful UV radiation and significantly reduces reflections to improve visual comfort. Hardened mirror coating increases lens resistance to scratches. Hydrophobic: - Special coating designed to repel water from the lens surface. Water on the hydrophobic lens forms a water droplet and run-off easily without causing visual distortion. Due to lenses with hydrophobic coating are anti-static, they require less cleaning, as they are less likely attracted to dust. Tr90 Frame: - TR90 grilamid is distinguished by its increased flexibility and outstanding durability. Grilamid sunglasses frames are ultralight and hypoallergenic.