Oakley Line Miner XM Ski Goggles were designed to give extended peripherals views buy pulling the goggle closer to the face than other models which gives awesome downward and side to side views. The frame features discreet notches to allow for most prescription eyewear to still be worn. Triple-layer face foam adds wind protection and is removable as is the strap. This is the Medium sized version with low profile design, increased helmet compatibility and a 40mm wide adjustable strap.