The Knoxville polarized lens are an exceptional pair of sunglasses. The Knoxville sunglasses have a 5 barrel stainless steel hinge, a polycarbonate frame and metal badging! The Knoxville is a modern twist on a classic pair of sunglasses. The Knoxville come in a variety of lens and frame colours. The Knoxville sunglasses not only look great, but also have 100% UV protection.