When you're gearing up for your desert mountain biking trip or weekend of hiking in the mountains, don't forget to pack the Kaenon Burnet Mid Ultra Polarized Sunglasses. Featuring a sporty wrap, superior optics, and lightweight-yet-tough construction, these shades are ready to accompany you on all your active adventures. SR-91 lenses deliver a coveted trinity of glass-like clarity, featherlight construction, and serious impact-resistance, essentially combing the best aspects of glass and polycarbonate lenses into one. This model goes one step further by employing SR-91 Ultra lenses, which enhance contrast and color for a more vivid and clear view of what's ahead, and they're polarized to reduce glare and help you see more clearly on snow or water. Light and flexible TR-90 frames provide comfort and durability, and Variflex nose pads prevent your shades from slipping when you're trekking a tough trail or flying around berms on your bike.