VISION: Smith MAG lens change system uses MAGnets for quick, easy lens changes, ChromaPop lenses enhance contrast and natural color to make the details pop, Birdseye Vision clarifies not just your line, but the riders in your periphery, 5X anti-fog inner lens for advanced fog-free performance. FIT: Small Fit, QuickFit strap adjustment system lets you find the right fit fast, Responsive Fit frame adjusts to your face for a precise, comfortable fit INTEGRATION: Designed for ultimate integration with Smith helmets for maximum comfort, venting and fog-free performance, Three-layer DriWix face foam wicks moisture for a fog-free fit, Ultra-wide, silicone-backed strap stays put Included : Additional lens, Goggle hardcase with gogglesoc Scope your line. Read the terrain. Drop in with confidence. The Smith 4D MAG S goggles bring the wide field of view and crisp optics of the 4D MAG to goggles designed for smaller faces. Add our quick and easy magnetic lens-change tech, and youve got the only goggles you need for all-conditions riding. Thanks to ChromaPop, the 4D MAG S drops you into a bigger, brighter, sharper world.