A standard for skiers and snowboarders who need to wear glasses underneath their goggles, the Index 2.0 OTG Goggles will deliver outstanding clarity. The taller and deeper frames are very accommodating to create the extra space for glasses with extra volume. A Cylindrical Thermoformed Lens offers up a wide field of view for you to take in the mountain views. An Anti-Fog Coating will help keep your lenses clear, even when you are working up a sweat or skiing in humid conditions. If you have never been able to find a goggle that fits easily over your eyeglasses, the Giro Index OTG is the goggle for you. Over-the-Glasses Friendly - No need to spend loads on prescription goggles when the Facet fits seamlessly over your prescription eyewear with temple cutouts for arms. Cylindrical Injected formed Lens - Shaped for optimal views with incredible strength and durability. Double Layer Face Foam - Microfleece facing is soft against the face and moisture wicking for all-day comfort. Anti-Fog Coating - Removes and fends off fog build-up for absolute clarity. Giro Helmet-Compatible - The top of the goggle fits against any Giro helmet to close the forehead gap and keep little heads warm. Anti-Fog Coating.