always keep an eye on the big picture. the oakley line miner goggle is designed to get the ultimate peripheral vision with a cylindrical design. the goggle sits closer to the face, allowing incredible downward and side-to-side peripheral vision. with its large size, the line miner is optimised for a wide range of faces and fits perfectly with most helmets.prizm sapphire lensprizmâ„¢ lens was developed so that you don't have to change the lenses in every weather condition. the prizmâ„¢ adapts to existing conditions and ensures optimal colour representation, maximising depth perception and greatly improving visibility. in addition, the high-quality lens coating of highly heated metal oxides reduces glare.