Electric Knoxville XL polarized sunglasses. With the rock-solid aesthetics of the original Knoxville intact, Electric up scaled the sizing to create a frame that offers more coverage and a larger look while maintaining clean, classic lines and uncompromised fit. Lightweight six base mold injected grilamid frame. Six base polycarbonate lens. Three barrel stainless steel optical hinge. Electric logo at temples. Polarized Level 1. 100% UV protection. Imported.