Otis Sunglasses are made using the most scratch resistant mineral glass lenses. They are an Australian owned company dedicated to delivering high quality sunglasses, and have won ‘Sunglasses Of The Year' 2 years in a row now! Otis sunglasses undergo rigorous testing to ensure they live up to quality Otis has become known for. 1 in every 10 sunglasses are tested for quality control and the mineral glass used in the lenses is imported from Italy. To ensure durability the glass lenses under chemical and thermal hardening, making them less likely to shatter.