Line Miner Pro M
Black Matte/Prizm 24K Gold, Prizm Clear

Two lenses ship with the Oakley Line Miner Pro M in Black Matte, so you can swap when the weather turns. The Pro is built around a single-layer lens that cuts distortion, refraction and reflection and opens the field of view 20 percent wider than the standard Line Miner.

Prizm 24K Gold handles the bright end. It runs a red base tint under a gold mirror at 12 percent light transmission, which Oakley rates for sun and clouds. Prizm Clear is the counterpart, letting through as much light as possible for snowfall, low cloud and evening laps under the lights. Switchlock handles the swap, with six magnets catching the lens and two mechanical locks holding it. Plutonite lens material gives 100 percent protection from UVA, UVB and UVC and harmful blue light to 400 nanometres. The frame is moulded in bio-resin and the strap is recycled polyester.

• Single-layer lens: 20 percent wider field of view than Line Miner
• Prizm 24K Gold: 12 percent light transmission for sun and clouds
• Prizm Clear: maximum light in snowfall and flat grey
• Switchlock with six magnets and two locks: fast lens changes
• Plutonite: 100 percent UV protection to 400 nanometres
• Triple-layer foam with polar fleece: sealed and dry
• Temple notches: room for glasses underneath

Line Miner Pro M uses the narrower Pro frame and arrives with a protective case and a recycled polyester micro bag. Two lenses plus Oakley's sharpest optics cover everything from bluebird high pressure to a heavy grey afternoon.