Learn more about Costa Sunglasses Costas Whitetip Polarized Sunglasses arent fancy, theyre just eye-catching. The hardworking frames are made of durable TR 90 nylon with sturdy integral cam-action pin hinges. The comfortable frames have either 580 glass or polycarbonate lenses. Polycarbonate lenses are lightweight and impact-resistant while glass lenses have greater clarity. Both feature scratch-resistant C-Wall technology, block 100% of UV light and are polarized to kill reflected glare and reduce eye strain. Gripper temple holes and hydrolite rubber provide a nonslip grip. Hard case included. Built by hand and backed for life, Costa sunglasses have a limited lifetime warranty. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Polarized.