PIT163 PIT VIPER THE REVLOCK THE HAWKSBILL BROWN POLARIZEDTHE REVLOCK Forged from the most durable materials in the world, these non slip ANZI Z87+ safety rated sunglasses are sure to keep your eyeballs safe from nuts, screws, and whatever else flies out of power tools. Measure once. These are only considered safety rated with the side shields installed. Polarized lens cuts glare and reduces eyestrain HDPV lens enhances contrast for high definition vision Stats: Removable side shields with latching mechanism