Smith's Fuel V. 1 Max goggles are a widespread favorite for their fog free lens and helmet friendly fit. But, the clear lens doesn't always cut it when the sun comes out, and that's why Smith provides the Fuel V. 1 Max M Goggles. It has all of the features that make the Fuel V. 1 Max so popular, but it adds a Red mirrored lens to the equation. This means that a blinding sun is an excuse to get a tan, not an excuse for being unable to see. To ensure that your goggles are fog free, it's essential that they have a close fit against your face. To these ends, Smith has incorporated its F. A. T. two layer face foam. Basically, it consists of a dense foam base and a soft, conforming foam mid layer. It results in a seamless interface that prevents fogging when you're riding. In fact, the two layer face foam is the upgrade that separates the Max version from the regular Fuel V. 1 goggles. And to secure the fit run after run, the straps are held in place with silicone grippers. The Red mirrored lenses included with the Fuel incorporate tear off tabs. So, you'll have clear vision when the rain starts coming down. But, if you'd prefer something that's friendlier to both the user and the environment, they're compatible with Smith's roll off system. It's not dissimilar from an analog camera, in that the pull tab advances the film roll across the lens. And, along with being easier to use than a standard tear off, you'll also enjoy the moral high ground of taking your used lens protectors with you, rather than littering the Earth with sheets of tear off film. The Smith Fuel V. 1 Max M Goggles are available in one size and in the colors Gloss Black, Gloss Cyan, Gloss Red, and Gloss White. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer andor birth defects or other reproductive harm.