Review on Python Safety Glasses by Global Vision Eyewear by Tim Thomason

I can't speak for other types of helmets but these fit perfectly under a full face helmet. I have a large but oval head and they fit well and match all my FF helmets perfectly. Visibility is good on the sides, and soft, pliable foam/rubber lines the frame and bridge. I find they stay in place well. No slipping or sliding towards them. Even though I don't have anti-fog lenses, in our current warmer temperatures I don't fog up with the visor up or down on my helmet. Let's see how they behave when it gets cold. This review is for the clear lens model only. I can't say anything about the effectiveness of sunglass models. But I bought them for night riding and the first time I put them on I forgot I had them on after a few minutes. They protect well against wind and are actually crystal clear. I don't notice any ripples or ripples in the lens, just sharpness and a smooth, wide field of view. These are "big" glasses, make no mistake. And it's appreciated under the helmet when the shield is up. However, they are not bulky and head. They are smooth and really "envelope". The workmanship is impressive in this price range. Yes, they are made of plastic, but the plastic feels as pliable as it is brittle, and will take a good flex without breaking. The frame of the lens is also important. They don't squeak or pop in that area, and the large one-piece lens doesn't seem to pop out anywhere near. Always. When I look at the glasses, I don't see what it would be like. The lens and frame appear to be one piece when they aren't, and the temples attach to the frame with standard eyeglass screws. Therefore, if they are loose, they can be tightened or replaced. I am not saying that they are unbreakable or that they are the highest quality glasses you can get. But for night riding and for less than $10 if your mode of transportation is a motorcycle and you wear a full face helmet, this could be one of the best and most affordable options for fit, visibility, safety, comfort and hopefully durability.