The Sweet Protection Boondock RIG Reflect Goggle is a semi-frameless design giving it a very clean and modern look. This is a medium sized and snug fitting goggle offering great field of vision. This model fits perfectly with small to medium sized faces and/or helmets. This model features a cylindrical lens with Sweet Protections proprietary lens technology called RIG. This technology provides reduced eye fatigue by increasing your contrast within your field of vision while also minimizing your color distortion, enhancing your vision and keeping your eyes locked on your line ahead or below you. The lense itself measures 2.2 -millimeters in thickness, which is thicker than most standard lenses on the market these days and provides superior impact resistance in case of a bad fall. And when you are working hard on a boot pack, or the spring time temps rise, a special acetate anti-fog inner lense keeps your goggles form fogging and provides you with clear vision. Premium details such as a thin defined frame, large vent ports on top and bottom, a 50-millimeter strap with integrated buckles and frame anchors ensure both style and functionality. The Boondock is designed to integrate seamlessly with all Sweet Protection helmets so there are no more dreaded gaper gaps between your goggles and helmet. The Sweet Protection Boondock RIG Reflect Goggle has all of the high tech features you need to keep you out on the snow longer, so you can maximize your fun factor.