FLEXIBLE: Grilamid Natural raw material produced in Switzerland stretches and returns to its original state against all kinds of impacts that may come from outside. Thanks to this flexibility, it does not harm you and it does not 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 enables us to produce lightweight but durable glasses. Material: Grilamid Nature (Switzerland) Glass: CR39, 100% UV Protective, Polarized Glass Color: Brown (DB9) Gender: Unisex Frame Color: Daisy Frame Size: 49mm (Glass) 19mm (Nosepiece) 140mm (Handle)