Optic Nerve Audax Multi Lens Sunglasses. Optic Nerve's Audax multi lens sunglasses have proven to be a fan favorite of cyclists, hikers, mountain bikers, and runners. Part of Optic Nerve's Deuce IC collection, the sunglasses come with two sets of interchangeable lenses. The Smoke lenses with Flash Mirror are perfect for bright days, while the Copper lenses have you covered on overcast days. Both provide 100% UV protection and feature an anti reflective coating to minimize glare. The hydrophobic lenses repel sweat and debris and are made out of TR90 materials for durability. Optic Nerve's Tactilite rubber bridge and temple pads reduce slippage to keep your glasses where they belong. Whether you're an Mountain Bike rider, everyday commuter, or speed racer, the Optic Nerve Audax multi lens sunglasses are a perfect fit.