Our philosophy hinges on style paired with premium materials and quality construction. Built for tough, everyday wear. With a respect for classic, timeless styles and attention to trends, Bertha is guaranteed to make you stand out. Lightweight Metal Frame Multi-Layer TAC Polarized Lenses Eliminates 100% of UVA/UVB Harmful Blue Light and Glare High Quality Metal Arms Adjustable Nosepads for a Comfortable Secure Fit Scratch and Impact Resistant