Selecting goggles can be a hard thing. However, here are some key factors worth considering when shopping for your next pair of goggles. Goggles come in all shapes and sizes. Generally, I like to classify goggles as "small" and "large".These classifications reflect both socket size and lens size. Socket size indicates the size of the goggle lens. Some goggles are what I consider "small socket." Some swimmers do not prefer small socket goggles because they can be harsh on the orbital bone. On the other hand, "large socket" goggles, because they don't fit into your eye socket, rely on some kind of suction device. My personal preference is a "small socket" goggle because the "large socket" goggles can feel a bit bulky. But, I encourage you to try both small and large socket goggles before making a final decision.Lens size is the size of the lens through which the swimmer sees. A larger lens allows the swimmer to see more; larger lenses allow for a wide-angle view or even "natural" vision. By contrast, small lenses allow the swimmer to "put the blinders on" and, perhaps, focus on their race by limiting their field of vision.