Learn more about Costa Sunglasses Costas Tasman Sea Polarized Sunglasses are as tough as they look. Made of durable nylon with integral hinges, these bold frames work as hard as you do. The comfortable frames have lightweight and impact-resistant polycarbonate lenses. The lenses are scratch-resistant and block 100% of UV light and are polarized to kill reflected glare and reduce eye strain. 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.