Loaded with a slew of high tech features, the Bliz Eyewear Polarized Tracker Sunglasses cater to outdoor enthusiasts seeking UV protection and glare reduction, as well as an ultra secure, highly customizable fit. Its polarized, unbreakable polycarbonate lens is ideal for active individuals who aren't exactly nice to their shades, sustaining accidental drops and regular mishaps without breaking. Polarization virtually eliminates glare when you're cycling at high altitudes, paddling across glistening bays, and skiing in bright conditions. Comfortably conforming to your nose and temples for the best possible fit, the soft, infinitely adjustable nose piece and wire core temples provide total customization. Another major benefit of the adjustable nose piece lies in its ability to enhance airflow during fast paced activities, such as mountain biking and skiing. Simply bend the nose piece to allow for more air passage between the bridge of your nose and the sunglasses. The frame uses near bombproof Grilamid TR 90 to ensure long lasting use, even through the most rigorous and demanding outdoor activities. What's cool about this frame is the bottom snaps off, allowing you to change its look and reduce weight when necessary. Two removable Jawbone bottom pieces are included for customizing the color of the shades. Other cool features include a snap in, adjustable strap for added security, as well as a protective hardcase for convenient travel and storage.