this is very subjective review but I love how comfy it is to wear it, lightweight and very clear to see.highly recommended.UPDATE 4/21/2015I have had these for 2 years now. The lenses are a little scratched up but that is entirely my fault for not protecting them when not worn. The frame still seems to be in good shape. No blistering, like some of the other reviews say, so I’m wondering if some people are getting knock-offs.I love the lens color. I’ve never had Ray Ban green before, but I will never buy grey lenses again. They look black from the outside, but the green lens gives a very naturally tinted appearance without washing out colors like grey lenses do.The lenses do scratch if not taken care of, but these are also very dressy, not sporty, glasses. Therefore, don’t expect something heavy duty you can throw around in your car. I’ve worn these to several weddings and I still get compliments on them. But I also wear them on the beach so I’ve exposed them to plenty of danger.The fit is perfect for me, but I can understand some of the bad reviews for not fitting people but I would think that would be the case with all glasses ever made. These are not adjustable in anyway, so either they fit or they don’t. You really need to try these on prior to purchasing. With me, I knew they were perfect the first second I tried them on, but Sunglass Hut wanted about $50 more so I had no choice but to walk away and order online.Two cons that don’t take away stars:The case is garbage. It cracked in the cold winter by leaving them in my car. I purchased a hard clam shell case that is better in every way.The frame is so light and barely holds on that it is impossible to store them on top of your head, and putting them on top of a baseball cap is an instant drop. They fell off the top of my head onto the concrete at least 5 times now. But again, that’s because they are so light, I forget they are up there, and then I bend over to reach for a pocket in my golf bag, and bang!In conclusion, they are definitely not for everyone, but if you want undetectably light frames with a timeless and dressy look, these are a great choice if you are lucky enough to be a good fit for the frame shape.ORIGINAL REVIEW:So light weight. I feel like I need to be super careful with these and I'm trying to baby them. After having heavy Oakley Juliets for 10 years, this was a big change for me. I love them and I can barely feel them at all when worn. The lens color makes colors appear very natural with a just enough tint to be comfortable in the sunniest days. The size of the lens give me a huge field of view that I am just not used to. I can't believe I have been missing out on glasses like this all my life. Oakley Juliets have such a small field of view and a thick bar of a frame that it obstructs your vision. Not these Ray Bans. You have to strain your eyes pretty hard to see the frame.I'm sure these are not for everyone though. Try them out in the stores first because they do not have any sort of nose pad. The frame sits directly on your nose and they are not adjustable at all. They fit me perfectly and are very comfortable. My eyebrows lightly brush the lenses which causes oil to get on them, but I think this would be the case for me with any style.So the glasses themselves are 5 star. My only complaint is that I hate the case. The case totally sucks and it's impossible for one handed operation because the leather flap is sprung down very tight. I will be shopping for a clam shell style case that fits this. But don't let that change your mind on the glasses. They are top notch.NARay-Ban Men's Rb4179 Liteforce Square Sunglasses:I Love these glasses! They are very lightweight which means I won’t have trouble wearing them all day. Of course nice and clear which, of course, they’re RayBan. So, why only four stars?They don’t grab! I need either more spring in the stems or some gummy something on the earpieces or maybe a little more hook on the ear. They are so loose fitting ( and no, they’re not the wrong size - at least by the numbers). If I were to turn my head rapidly or even bend down to tie my shoe, these things are coming off. If I have them on top of my head, they’re coming off. I need to find a way to snug these up. I don’t want a smaller size. These are right for my face. I also don’t have this problem with any other of the Ray-Bans that I have.Love the look though!I saw these sunglasses at a leading sunglasses retailer which are located in just about every mall here in the US. I liked the fit and the style, but not for $210. So I did what anyone would do and checked Amazon. The price was much better for the exact same sunglasses. I was concerned about purchasing them online, but they came well packaged with the original packaging intact.Now to the sunglasses. They are great. I've used them for running and driving and they excel at both. They are lightweight, so I usually forget I am wearing them. I typically have to run back out to the car to put them away. They are comfortable and fit my face well for not having adjustable parts on them like my previous pairs. They stay secure with the windows down and the wind blowing. They also don't bounce at all when running, which can happen with some sunglasses and it just super annoying.They are lightweight but not flimsy. The plastic material is flexable but never feels like it's going to break. I wouldn't test the material too much but I'm not worried about them breaking at all. I got a hard case for them for airplane travel, since the ray-ban case that comes with it is a little soft.These will be great for years to come. The seller was fast with the shipping and did a great job packing them. They even sent a follow up email to make sure everything went okay.Love these. Have bought them 5 times (wore out 2x, lost 2x). I recommend the green lenses. I've had the green lenses 4 times, black lenses the last time. Bought the black because they were lower cost but they are really dark and made it tough to see the screen in my car (Tesla). The polarized green are really easy to look through, really break the glare and my go to glasses for multiple days per week at the beach or on the boat. Wish I could get a multi-purchase discount!Great style, they are super light weightLove the polarized lenses and comfort of the lightweight frame.I purchased these glasses for my trip to India and I am very happy that I did.Being fibre frame, these glasses are extremely light weight, and they cover your eyes very well. I used it not just for regular use, but also for riding two wheelers, and they do protect your eyes very well from dust and wind. As the fibre frame are flexible (haven't tested the extreme but....) they easily slide through the helmet to fit your ears. The Polarized glasses were very useful. I used them while on houseboat and the difference was amazing.... Highly recommended.I've left one review praising these shades but had to leave another. If I could I would give these ten star's. Worn for the first time driving in typical winter sunshine. BRILL. No glare whatsoever. I've had a lot of designer shade's but these are by far the best. So light and comfortable you forget you have them on.I like RayBan sunglasses, they are the best, especially the polarising one, sadly I can’t leave a review on these because they never turned up.Arrived well in time with good packaging. The only part confused me was the back side of the glasses looked messy when they arrived like finger prints or something and I almost returned them. But when I cleaned them with the spray I had, the glasses were clean and besides I realized that these kind of glasses has some kind of coating to protect them from scratches and water I suppose.The frame is very thin