The Sunwise Windrush Interchangeable Sunglasses have a variety of durable, lightweight, comfortable, secure-wearing models & are proven best sellers. Each frame has an extra set of polycarbonate lenses which are high definition, shatterproof & lightweight, giving the best visibility in all light conditions. Half frame creates obstruction free peripheral vision. They provide 100% protection against UV rays & have rubber nose pads & sleeves for maximum comfort & a secure fit.