Electric Knoxville sunglasses. Few things are truly classic. That being said, the Knoxville wasn't born classic, he was raised right. Born and bred with hard lines, timeless design traits and Italian quality, think of it like this: Where did our bestselling Hardknox grow up? That's right, Knoxville.Lightweight six base mold injected Grilamid frame. Six base grey polycarbonate lens. Five barrel stainless steel optical hinge. Electric logo at temples. 100% UV protection. 98% Blue light protection. Imported.