Aqua Sphere Adults Eagle Optics Optical Lens For Swimming Goggles (Single Lens) Polycarbonate, , Designed to fit the Eagle swim goggle (UTAS158). Available individually in half-step diopter increments from -1.5 to -6.0. Simple pop-and-swap lens replacement process. Durable polycarbonate lens. 100% UVA/UVB protection.