The Maui Jim Switchbacks Interchangeable Sunglasses delivers the versatile protection you need for long days outside whether you're running, hiking, or biking from sunrise to sunset. These interchangeable sunglasses come with clear lenses for protection in low light conditions, as well as tinted ones, and you can switch them on the go with the simple press of a button. All the lenses feature multi layer PolarizedPlus 2 technology to eliminate glare, block UVA, UVB, and UVC rays, and enhance color and contrast. Maui Jim coated these impact resistant polycarbonate lenses with Clearshell scratch resistant protection to keep the Switchbacks performing at their best for a long time. The grilamid frame fits medium to large faces comfortably, and Maui Jim recommends this pair for round, oval, or square shaped heads. You can adjust the bridge for an ideal fit, and the Rabalon nosepads help the Switchbacks stay put on your face even if you work up a sweat. The pin hinges are anti corrosive, meaning you won't ruin this sporty pair of sunglasses if take them out on the high seas.