Long runs can leave your sunglasses sliding down your face, foggy from sweat, and eventually stuffed inside your chest pack. Designed to eliminate fogging, block sweat, and offer long lasting comfort, the Bliz Rapid Sunglasses will be one pair of shades you won't want to leave behind during your next trail running epic. The interchangeable lens system lets you dial in the write shade to accommodate low light, or full on sunny conditions, while the lenses themselves filter out 100% of UVA and UVB rays for added protection from the sun.The Rapids are sized to fit smaller face sizes, but don't think they're lacking any features as a result of their reduced size. Their nose and temple pads are infinitely adjustable, and the attachable sweat bar prevents moisture from your forehead from running down the lenses. For added security, the Rapids come with Bliz's click in goggle style head band, so you can be sure that they stay firmly planted on your face whether you're running a quick six on the trails near your house or embarking on a 50 mile suffer fest in the high mountains.