I love these goggles! It took me about 20 minutes to figure out how to swap the lenses the first time, but now I can do it pretty fast. The goggles are very stylish (I love the colors!), but more important than that are the lenses. These goggles don't block my vision the way my borrowed ones did (different brand) and they don't fog up. I haven't used the white-out lens yet (for darker conditions), but the lens for sunshine has worked great. The strap sticks to my helmet, so I'm not worried about losing my goggles, even if my helmet doesn't have a goggles lock. Overall, I am very pleased with these Smith goggles.