The Smith 4D Mag is the flagship goggle from Smith. Featuring the widest field of vision and sharpest optics to give you the best possible read on the terrain. The MAG tech allows you to interchange the two included Chromapop lenses in a jiffy.  The 4D Mag is a medium fit goggle, suitable for all face shapes, and has more range of vision than most large framed goggles on the market thanks to their Birdeye Vision Technology. The lower half of the goggle wraps around to contour your face in a way that eliminates frame interference. Also included is a hard sided goggle case, Gogglesoc lens protector, and microfiber bag for cleaning and storage. Features 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 Designed for ultimate integration with Smith helmets for maximum comfort, venting and fog-free performance QuickFit strap adjustment system lets you find the right fit fast Ultra-wide, silicone-backed strap stays put Three-layer DriWix face foam wicks moisture for a fog-free fit AirEvac™ ventilation system integrates with Smith helmets for fog-free lenses Medium fit; Available in Asian fit Smith 4D Mag Low Bridge Fit Ski Goggles