Smith Optics the Undertow are designed with barrel hinges on a durable plastic frame; the scratch & impact-resistant polarized polycarbonate lenses eliminate glare & ensure 100% UV protection. Ideal for casual wear & driving. The LIGHTWEIGHT Techlite lenses are tempered in NITRATE BATHS for SCRATCH/IMPACT-RESISTANCE 100% UV PROTECTION & superb OPTICAL CLARITY. All Smith Sunglasses ensure good eye coverage & long-lasting comfort on the slope at the beach or in any high light environment. Fits size large. Frame: Black Lens: Polarized Brown