Unisex Transparent Blue Light Sunglasses Natural raw material is resistant to impacts and does not break easily thanks to its flexible structure. It is antibacterial and antiallergic. Grilamid Natural raw material is sterile, does not cause bacteria and does not contain Bisphenol A (BPA). It will not harm your health.: “The human eye is roughly sensitive to the light band from the sun between 400 and 760 nanometers. The 400 nanometer rays - which are called Ultraviolet (UV) - and below from the sun have negative effects on the cell and cell DNA because they contain high energy. As the wavelength of UV rays decreases, their harmful effects increase. The most useful wavelength glass lens, UV 400, does not transmit harmful rays in the atmosphere. STAOOM Sunglasses prefer UV 400 glass lenses. STAOOM prefers universal products with sterile raw material content, brand approved EU countries and global substances, hygiene approved, global import and export certificates. STAOOM cares about its customers and customer satisfaction, contrary to the stereotypical thinking within the interests of the brand and company, and creates operations with this sensitivity. STAOOOM