PIT171 PIT VIPER THE ALTIMETER THE BLACK PEARL PINK PURPLE POLARIZEDTHE ALTIMETER,, Pit Viper's most approachable style yet ascend the atmosphere. the frame has Extreme durability, No Slip Grip, and high contrast HDPV lens technology enhances your vision whether youre camping or hiking. HDPV provides ultra sharp clarity through carefully fine tuned tints and coatings. These lenses enable you to see your best by drawing out subtle differences in colors whether youre swinging for the benches, ripping zingers down the