Sunwise Interchangeable are a range made up of lightweight, comfortable models. The added bonus is that each frame comes with three additional sets of lenses, all of which are high definition & made from shatterproof polycarbonate. This means that you can alter the protection & visibility depending on the strength of the sun on any particular day. These impressive sunglasses are tested, reviewed, ready-to-wear & highly recommended by professional sportspeople for all sports & outdoor activities. Regardless of whether youre into running, playing cricket, cycling, or if its skiing, hiking or walking, there is a style to suit you. Multi-layer polycarbonate lenses feature nine surface layers, providing superior protection for strong glare settings such as ski slopes or the midday sun, to enhance visibility & comfort. This Interchangeable range can be accommodated to suit different needs & conditions, & then can be easily modified whenever you choose. Lightweight & secure fitting. Half-frame creates obstruction-free peripheral vision. Panoramic view enables maximum eye protection 100% protection against harmful ultraviolet rays. Clear, low, medium, strong light interchangeable lenses with each pair. Optional Anti-Fog lenses. Rubber nose pads & sleeves for maximum comfort & secure fit. superb visibility in strong glare positions. Flat arms profile perfect for wearing under a cap or helmet.