Innovation is our mantra. We are constantly seeking out new technologies to innovate the eyewear industry. As a result, Amphibia Eyegear is the world's first-and-only floating, safety-rated eyewear available on the market today. We also include many other distinguishing performance variables such as anti-fog lenses polarized strong enough to block solar radiation and heat-activated polymers that prevent slippage - also available in RX.