Details are everything. And, if your optics are of poor quality, distortion of the trail is going to cause sloppy lines -- or worse. Thankfully, Oakley"s been developing optics for both motorsports and cycling long enough that the Airbrake MX Goggles are sure to provide excellent visibility, protection, and comfort. The Airbrake MX"s frame was designed around a frame that"s made from Oakley"s thermoplastic urethane and O Matter. Basically, materials allow for a design that provides as much side view as possible, and this holds true to the vertical ends of the vision spectrum as well. In between the frame and your skin is a soft and wicking foam that both maximizes comfort and sweat control. Most importantly, though, is the optically pure Plutonite lens. This lens ensures that you see the forest for the trees, from the top to the bottom of your run, while your eyes also remain well protected. Keeping the Airbrake MX in place is a wide and rigid O Matter strap with an inner-silicone lining that eliminates slippage while on your helmet. The Oakley Airbrake MX Goggles are one-size-fits-most and are available in four of colors to match your kit -- Black Retro Speed/clear, Jet Black Speed/clear, Matte White Speed/clear, and Red Retro Speed/clear.