The XM version of the Oakley Line Miner was made for riders with medium-sized faces. But apart from that, it has the same qualities as the classic version! This cylindrical lens was designed to be as close as possible to the face and offer the ultimate peripheral vision. The versatile category-2 lens present of this model will be ideal for sunny/cloudy conditions. In addition, this is an OTG frame which means you can use your viewing glasses under the goggle. Goggles Oakley ---Line Miner M B1B Purple Prizm Sapphire Iridium