I purchased these a few years back and they were PERFECT! Lightweight, good polarization, and cheap. After getting quite scratched up I returned to the seller to get a new pair and was a bit disappointed. These new ones have stiff joints that don't sit flat if hung on your tee-shirt collar. The polarization appears to be less and the nose rest pinches my nose. Overall they're decent for the price, but I would no longer recommend these to friends.I have to say that, at this price, I really couldn't expect more. Here's the pros and cons:Pros:1. This pair of sunglasses is super lightweight. After wearing for about three hours while driving, I didn't feel any pressure on nose or ears.2. The glasses are great, material looks better than most. It has its logo on the top-right corner, which is pretty cool to me.3. Durability of the sunglasses is amazing. Just like how they are advertised, I tried twisting and bending for a while and everything was good.Cons:1. The material of the frame feels nice but not top class that kind of feel. Of course it's not, it only costs $30, right? But what I am trying to say is, they can invest more on frame part to make it looks perfect. I would still make the purchase if they charge me $5 more for doing that.All in all, for $30, you can't really find a better choice. I would recommend it to my family and friends.Edit: After wearing for days, I love it even more. Can’t wait to get another pair for my boyfriend!I couldn't be happier with these glares. They are like the coolest pair of glasses I've ever had and it just makes me smile wearing them and it really makes things more interesting to look at. Maybe not the safest idea but I've worn them driving and during the day every car has a busy of rainbows outlining them and at night the street lights and traffic lights pop out like a kaleidoscope. Bright LED lights are the things that work the best and among the best of those is party lights. I have rotating party lights I hit from Walmart and they look amazing and I have CFL black light bulbs in my ceiling fan and it looks amazing too. The sunset though Omg! The build quality is pretty good they haven't scratched or broken and I've been wearing them alot. They're pretty stylish too especially if you're going for like a nu rave or hipster look these are perfect and they make your vision that much more entertaining. One of the really cool things about these diffraction glasses is that you can put it over your camera lense for some really interesting photography! Like I said I couldn't be happier with these glares man B)I like the glasses over all. They are pretty light weight so I'm hoping they don't break easyTHESE ARE FREAKING AMAZING!! I have tried the paper glasses and was debating whether or not to get a pack of 20 instead but these are much better than the paper ones. I was a little worried that they wouldn't be as cool or that the glasses would break, but they are amazing!! I have had many people try them on and they are still working just fine! However, I am a person that gets motion sickness easily, so after wearing these for a few minutes I start to feel nauseous but it is worth it. Many people bought these for concerts but I just bought them for fun, because I just love to wear them around the house. If you haven't worn diffraction glasses before, you should totally buy these. I totally recommend these. They also look like normal glasses so if you wanted to wear them around you could, if someone sees you wearing them up close they can see that they aren't actually glasses because you can see the diffraction a little bit. Overall, I totally recommend these are super amazing!!! LOVE IT!!Honestly I’ve been threw 100s of sunglasses. I drive so much and there’s been so many time I’ve taken off my glasses so fast that they broke by getting cough my on my face or me taking them off putting them in my chair and sitting on them and then breaking. Marsquest are honestly dope. The first day I got them I went and cleaned my car and left my glasses on my car as I drove off came right back and got them not a single scratch and I’ve stepped on them on Accident already as well oh yeah should I mention I’m a 400 pound guy Any way. These glasses are amazing and amazing light I take them apart just to put them back together infront of people just cause I can and they can’t.Decides to try out a little more expensive, flexible sunglasses since I'm tired of all of my cheap pairs eventually breaking. The material that the sunglasses are made out of are cheap feeling which annoyed me instantly considering these are $30. I put them on and was surprised by the rose tint that you see through them and was some what pleased with how well they worked but the arms of the glasses were too wide for my head (surprisingly cause I dont have a small head) and were just slightly crooked. Needless to say they weren't that impressive to me but I had my boyfriend try them on to see if he wanted to keep them since I would have to pay for shipping to return them, and they were fine on him. He has a hard time finding glasses that he can still see color through properly so the usual brown tones don't work well with his eyes but the rose tint worked more for him.TL;DR: cheaper material than you think they'd be made out of for the price, rose tinted glasses, wide arms, and slightly crooked. Did not work for me, worked for my boyfriend. Didn't want to pay for return shipping.