ABOUT SMITH: Originating from Sun Valley, Idaho, Smith was founded in 1965 with the invention of the first snow goggle featuring a sealed thermal lens and breathable vent foam. With 50 years of innovation and design experience, Smith is widely known today as an industry leader that pioneers advanced eyewear and helmets that incorporate dynamic technologies, optimized performance and clean styling to fuel fun beyond walls. Smith seeks to power thrilling experiences in snow, surf, bike, fish and peak performance outdoor adventures with a comprehensive collection that exudes modern style and vibrant personality. To Smith, the experience is everything.SMITH 4D MAG S GOGGLESmith MAG interchangable systemSmall fitQuickfit strap adjust system3-lay DriWix face foamHelmet compatibleLENS MATERIALS OFFERED ON ALL SMITH GOGGLESCARBONIC-X LENSESSmith's Carbonic-x outer lens material is individually molded to offer optimum scratch and impact resistance. The Carbonic-x material meets class 1 optical standards. There is simply no better lens.FOG-XOur Fog-x lens employs a hydrophilic, micro-etched surface to absorb moisture and disperse it over a wide surface area to prevent fogging. Because it is physically carved into the lens, it can't be wiped away like other anti-fog coatings.HYDROPHOBIC LENS COATINGA durable coating bonded to all mirrored lenses that repels moisture, grease and grime. A barrier between your lenses and the world. Water will bead up and disperse without streaking. Smudges from fingerprints are wiped clean easily. Smith Optics 4D MAG S Women's Snow Winter Goggles