The Mizuno GX-Sonic Eye Goggle is a new curved lens goggle featuring a thinner, more adhesive cushion allowing for more comfort on your face and an excellent seal. This mirrored goggle has an anti-fog treatment and offers UV protection. Engineered with a hydrodynamic design, including sleek outer edges, inner eye fit, and offers a clear view for ideal speed functionality. GX-SONIC Series: Mizuno's most elite swim product, built for competition. Enhanced Field Of Vision Anti-fog: Goggle gasket made with polycarbonate anti fogging process.