Oakley HSTN sunglasses are designed for those who want to push their limits and embrace new challenges. With a round matte black o matter frame, these shades exude confidence in your ability to conquer any obstacle. The prizm sapphire polarized lenses provide optimal clarity and enhanced color contrast so you can navigate your path with ease. Experience unparalleled performance thanks to the engineered design that offers both comfort and durability. Available with lens contrast enhancement technology.