The No.13 is professional surfer Clay Marzo's favorite sunnies. This is his signature mode lT. The No.13 sunglasses have a 5 barrel stainless steel hinge, a polycarbonate frame and metal badging! The No.13 is a modern twist on a classic pair of sunglasses. The No.13 comes in a variety of lens and frame colors. The No.13 sunglasses not only look great, but also have 100% UV protection.