Maui Jim Baby Beach sunglasses, specifically model MJ-245-16. The numbers and letters on the inside of the arm provide the following details about the sunglasses: MJ-245: Indicates the model number, which is the Baby Beach. 16: Refers to the color code, which is Gold. 56☐18: Denotes the lens and bridge measurements. 56 mm is the lens width, and 18 mm is the bridge width. 120: Denotes the temple length in millimeters. These sunglasses are designed with a modified aviator shape to complement smaller to medium faces. The frame is made of lightweight, durable titanium and features adjustable, non-slip silicone nose pads for comfort. The lenses are polarized to enhance clarity, contrast, and color perception while reducing glare. Maui Jim sunglasses are known for their high-quality materials and craftsmanship. The lenses are made with Maui Evolution material, a hybrid of glass and polycarbonate, which is scratch and impact-resistant.