MPN 179100. The Katmai is the choice for any adventurer. Leupold Katmai Eyewear. Coming in 5 different styles, you’re sure to find the right pair of glasses to fit your lifestyle. Whether you’re plinking steel at 1000 yards, wading in your favorite stream looking for cutthroats, hiking the back country in search of antlers, or just looking for a high quality pair of sunglasses, Leupold has got you covered.