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 for a seamless and secure lens-to-frame seal that makes for easy lens changes and unsurpassed lens 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 MFI® technology (Magnetic Face Mask Integration) uses magnetic connection to quickly seal your face mask to your goggles without obstructing ventilation for a gapless setup that seals out the elements No-slip silicone strap keeps the goggles in place so riders can focus on the terrain; Over-the-glasses compatible frame designed to accommodate prescription eyewear underneath the goggles 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 Triple-layer face foam features two layers of foam, including a slightly denser layer closest to the face, and a layer of moisture-wicking fleece for a snug seal and comfortable fit; 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 Full-perimeter vent channel maximizes airflow to bring fresh air in and move hot air and moisture out for clear vision Precise helmet-to-goggle fit with our widest field of vision, highest contrast lenses, and the unprecedented versatility to easily switch between toric and cylindrical lenses. Anon M4S Cylindrical Goggles + Bonus Lens + MFI Face Mask