Spy Optic Dirty Mo Sunglasses The Dirty Mo, Dale Earnhardt Jrs signature Spy sunglass, is designed to Dales specifications. The Spy Dirty Mo is your first place trophy no matter how you finish. Features Custom-built from high quality propionate Sturdy 8 MM stop hinge 9 x 3 Base Toric ARC lenses 100% UVA, B C protection Frame measures 59-18-121 Select colors available in Trident polarized lens