Goggles always have been, and still are, a great way to protect your eyes when you're on the bike. One of the key benefits of goggles, of course, is that there's never any misting up. Traditionally worn with an open-face helmet, goggles have more recently become a popular accessory on a full-face helmet. This was a trend started in California. It looks cool, but more importantly, in hot weather, it allows you to get an airflow across the face. Goggles come in all kinds of shapes and sizes. If you want to wear goggles over a pair of spectacles, you may need a larger framed goggle. In only about 50% of cases do goggles fit the wearer of an open-face helmet. The deciding factor is how much forehead remains visible beneath the rim of the helmet. To prevent goggles being pushed down the nose, you will need at least an inch of forehead on show above the eyebrows. The only way to be sure is to try on your chosen goggle with your chosen helmet.