Defy Lifestyle AirEvac™ ventilation system integrates with

AirEvac™ ventilation system integrates with Smith eyewear for fog-free lenses

so you get the clearest picture of the terrain ahead

Fine tune your kit with additional or replacement lenses for sunny conditions

Heavyweight

Replacement lens for the Smith Optics Squad MAG goggle

Defy Lifestyle AirEvac™ ventilation system integrates withDescription Whether you're running, rolling or sliding, a crisp view of the terrain translates to full speed ahead fun. The Smith Defy sunglasses double down with a lightweight, rimless design and terrain defining ChromaPop optics for unobstructed, high contrast vision. Whether you're on the move in the hills or simply taking in the view from the back deck, an interchangeable lens lets you match the light conditions. Product Details Vision ChromaPop