Gateway's Swap Mag Eyewear with reading diopter positioned at lens bottom adjusts to meet your environment. They come with temples to use as glasses and a head strap to quickly and easily swap it to a goggle. The Swap polycarbonate lens meets ANSI Z87.1+ and CSA Z94.3 Standards while blocking more than 99.9% of UV-A, B and C Light. Frame is fully lined with soft foam edge to block dust and debris, while channeling air to minimize fogging. Offered in clear and gray lens with 1.5 and 2.0 reading diopter strength.