The Anon M4S Cylindrical Goggles feature the same high-end performance of the M4 Goggles in a frame scaled for medium-sized faces. They offer a precise helmet-to-goggle fit with the wide field of view and low-profile design of a cylindrical lens. The Low Bridge Fit features enhanced face foam that tapers to be 5-7mm thicker at the nose for a gapless fit. Anons innovative MAGNA-TECH quick lens-change technology uses a powerful magnetic interface that allows you to swap lenses with ease. The M4S offers the unprecedented versatility to switch between toric and cylindrical style lenses. This edition of the M4S includes two cylindrical lenses featuring PERCEIVE optics for high-contrast, terrain-defining clarity and Anons best anti-fog treatment for crystal clear vision through a wide range of conditions. Magnetic Face Mask Integration (MFI) provides seamless face mask attachment, and full-perimeter vents maintain consistent airflow for fog-free clarity. Includes an MFI face mask, microfiber goggle bag, and bonus lens.   FEATURES: Unisex frame design; Fits medium and large faces; Helmet compatible; MFI face mask, bonus lens, microfiber goggle bag, and lens compression case included. MAGNA-TECH quick lens-change technology uses magnets and up to 8 points of connection to provide riders with a seamless and secure lens-to-frame seal with unsurpassed retention. PERCEIVE lens provides high-contrast vision and terrain-defining clarity in just about any light condition; A hydrophobic and oleophobic coating provides unmatched smudge, scratch, and moisture resistance on the outer lens surface for clear optics and easy cleaning. Cylindrical injected lens design reduces peripheral distortion; Integral Clarity Technology anti-fog exceeds basic anti-fog treatment standards, delivering crystal clear vision that lasts for an extended period of time; Wall-to-wall vision incorporates optimal optics in a low-profile frame that utilizes 40% thinner face foam for an ultra-close fit. Low-bridge fit goggles have additional face foam in the nose pocket to sit closer to the face and fit snug for a gap-free fit on faces with a lower nose bridge; Polartec Power Dry face fleece pulls moisture away from the face with maximum efficiency for faster evaporation and a high level of anti-fog; Lightweight, dual-molded PC-ABS/TPU frame combines a rigid outer frame that improves lens interface performance and rigidity with a soft and flexible inner frame that maintains a comfortable fit on the face.