FLEXIBLE: Grilamid Natural raw material produced in Switzerland stretches and regains its former state against all kinds of impacts that may come from outside. Thanks to this flexibility, it neither harms you nor does it get damaged. ANTIALERGIC: Grilamid Natural raw material does not contain any BISPHENOL A (BPA) substance that causes cancer and allergies. 100% healthy. LIGHTWEIGHT: Heavy glasses cause headaches and deterioration in nasal aesthetics in the user. Grilamid Natural allows us to produce lightweight but durable glasses. Material: Grilamid Nature (Switzerland) Glass: CR39, 100% UV Protective, Polarized Gender: Unisex Frame Size: 46mm (Glass) 20mm (Nosepiece) 140mm (Handle)