Received the glasses quickly, and was impressed with the packaging. Looks like higher end product though price was very budget friendly. The glasses themselves were very lightweight and comfortable and seemed to make a difference with my eye fatigue. I’m a teacher and on my computer all day long due to virtual learning. At the end of most days my eyes hurt, and I often have a headache. After wearing the blue light glasses for about a week, I did notice my eyes were not as tired and I only had one headache. I will definitely continue to wear them! My only wish would be that they were slightly wider and that the lenses were slightly bigger. I have a wide head, and I usually wear reading glasses so I wore the blue light glasses over top of my others. They worked fine like this surprisingly but would have fit better if a little larger. Otherwise, a great little pair of blue light glasses!!I can't really comment on the science of blocking blue light but based on my personal experience, I think the glasses significantly reduces the blue light from my phone and computer screens. And it makes long marathon sessions on my computer (for my job) way more comfortable. The lenses are tinted are warm amber color so I feel like they have the same effect as when I turn on my iPhone's Night Shift feature which warms up the screen so you can get a better night's sleep.In my photos, you can even see the purple-ish reflection of my laptop screen in the corner so I think they're doing something! They are actually pretty trendy and weigh almost nothing on my face - I feel like a hipster! I wish they were slightly larger in size because I think it would look better on my face but very pleased with them so far.I wear progressive glasses and when I work on the computer, I find myself removing my progressive glasses to be able to see more clearly (eyes getting old). This meant no protection for my eyes. These Blue Light blocking glasses are the perfect solution. I am on the computer for hours each day, and these actually feel good on. There really is a difference in terms of the light from the screen. The added bonus is that the nose-pads are padded and rest comfortably on my nose. It is not very obvious but the nose pads are both padded and non-slip, unlike other glasses I have owned where the hard plastic makes them slide off.These glasses are nice, but DO NOT BLOCK BLUE LIGHT. Please read the rest of this review before buying.Most people seem to not understand that this is important to actually fix that problem, and I think most people think it's helping when it doesn't. There are some tests you can perform online that test the effectiveness of blue light blocking. As you can see from the picture I included, the black and the blue color blocks should be exactly the same -- black. However, there is zero difference between the screen and what is seen from the glasses. It barely changes tint, even taking into account the amber-ish color lenses.I have yet to find a pair on Amazon that ACTUALLY work as they should. Avoid ALL glasses that include a 'blue laser test.' That is the easiest way to find a scam pair of glasses, as the lasers they include only emit a violet color light and don't actually test the effectiveness of blue light. To see for yourself all of this evidence, I used this site as a reference and it's how I tested the glasses. If you already own these, or own another pair, I urge you to at least google the image 'blue' and do what I did in the picture I included, and see how you were likely scammed. I'm aware this was a massive essay on this subject, but I feel you should be best informed what you are buying.Thank you,Samuel PriceThey look great and work as advertised.The glasses were a bit big for me but they did help while I was on the computer. I didn't get as many headaches.Look cool, helps with blocking blue light!Súper cómodos