NYX intraSPX™ Sunglasses Prescription Insert System

E.A.R. offers the lightest and most complete sports optical system in existence. The patented intraSPX™ optical insert can be easily interchanged between the polycarbonate lenses of the NYX Sport Vision System. The intraSPX™ optical insert effectively gives the sports enthusiast which need vision correction lenses the ability to adapt instantly against changing sunlight conditions. Low Profile – intraSPX™ utilizes a patented “lens suspension” prescription mounting system that keeps your sunglasses close to your face. The system enables the frame to retain its fit, comfort, and styling. Light Weight – intraSPX™ system’s patented design features rimless prescription lenses which eliminate the “second frame” common with other systems. This unique design combined with our exclusive ORAD™ lens grinding process guarantees you the thinnest, lightest sport optical insert system in existence. Versatile – intraSPX™ prescription insert can be interchanged between most of the NYX frame and shield lens combination. Lens Options:  Single – Bifocal (Lined) – Progressive Lens Material:  Polycarbonate is the most impact resistant of any lens material and is strongly recommended for use in active sports. Scratch resistant coating is included.