always keep an eye on the big picture. the oakley line miner goggles are cylindrical and designed to provide the ultimate peripheral vision. it 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 snow black iridiumprizmâ„¢ lens was developed, so 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 improving visibility. in addition, the high-quality lens coating of highly heated metal oxides reduces glare.