What Our Gearhead(R) Experts Are Saying: "I've used The Altimeter on hikes, river days, and while driving cross-country-they stay put, never slide, and the HDPV lenses really sharpen contrast without overdoing it. Plus, they've taken a beating in my gear bin and still look new. Legit performance, Pit Viper attitude."Take your optics to new heights with Pit Viper's The Altimeter HDPV Polarized Sunglasses-a pair built for clear vision, aggressive adventure, and a whole lot of personality. Whether we're navigating sun-glared alpine ridgelines or simply scoping out weekend mischief, the Altimeter brings crisp clarity and rugged construction wherever we roam. The HDPV lens tech enhances contrast for a sharper, high-definition view of the world, while the polarized protection keeps eyes safe under full sun. Rubberized No Slip Grip(TM) touchpoints ensure a dialed-in fit whether we're working up a sweat or catching unexpected air. With nearly indestructible construction and unapologetic style, The Altimeter is built for thrill seekers with a sense of humor and high standards.