The Anon M4S goggle is the trimmed down variant of the iconic M4. With a 40% smaller frame and unisex styling, making it ideal for Small to Medium faces. The M4S can come with Toric or Cylindrical lens shapes so you can match it to your style. The Anon M4S offers a huge range of vision for an uninterrupted view, and PERCEIVE lenses for crystal clear terrain definition.  MFI® Technology (Magnetic Facemask Integration) creates a perfect seal between the supplied facemask and your goggles. This seamless integration reduces goggle fog when you cover up, and blocks the elements from slamming in to your face. Anon's Magna-Tech® Quick Lens Change Technology allows for ultra quick lens changes, letting you change lens quickly when the conditions demand it. Features Toric (spherical) Lenses PERCEIVE Lenses Medium Fit OTG Compatible Triple Layer Face Foam Magna-Tech® Quick Lens Change Technology MFI® Technology (Magnetic Facemask Integration) Included Second Lens Included MFI Facemask Anon M4S Cylindrical MFI Ski Goggles