Play baseball, chew dirt, flip-off your mom. The Flip-Offs are here. The classic Pit Viper shape you know and love, now with Flip-Up Technology. Stats UVA & UVB Protection: 100% Light Transmission: 16% Look Thru Color: Grey Lens: 2.2mm Polycarbonate Rx Insert-Compatible What&';s in the Box - 1 Firm case - 1 Limp cloth Size Guide: Frame Width a 5.66in (Merika) a 144mm (Metric) Frame Height a 2.36in (Merika) a 60mm (Metric) Nose Opening a 1.31in (Merika) a 33.5mm (Metric)