I don't think you can beat this product for the money. It took quite a while to arrive but I knew that before I placed the order based on the date it was saying it would arrive. It arrived as scheduled. It includes a little blue light test kit so that you can shine the light through and see that it is blocking it. I found that to be assuring. I ordered these for my 4 and a half year old son and they fit well although I'm not sure they would fit a child much smaller than him, but would likely fit a child a couple years bigger.one of his older sisters has to wear prescription glasses that have the anti blue light in them, as well as what they call a scrambler at the bottom of her lens. They said her eyes are over focusing and it's caused by device time and blue light. her school is a Chromebook only school and has been for many years so, although I can limit her device time at home, I cannot limit its during the day at school or while doing her homework. I got these for my youngest son with the hopes of preventing him from having the same issue. He does some preschool work on his Kindle, which has a setting to eliminate blue light. But he also does some preschool work and gets to watch some movies on an iPad which is very very old, and does not seem to have a setting to block blue light. Our TV also does not have a setting to block blue light. So I feel like these are a good compromise for being able to keep letting kids use technology while protecting their eye health.My daughter loves she even wears at school too less eye fatigue better sleepBought for my 9 year old to use since he is in front of the screen all day for school and is prone to migraines. Good news is anti blue light glasses helped a lot, bad news it was not this pair since it was WAY too small for him. We bought a different pair that was bigger and work well. However, these would have worked except for the size. We gave these to my 6 year to use when playing games so they were still useful.This are great for the money and with distance learning is good to protect little eyes. However, the description says for kids up to 12 and I would disagree. These are for smaller kids maybe up to 7 or 8 yr and of average size. My boys are 9 and 11 and these are a little too small for their faces, but they look super cute on my 3 y/oBought them for my Granddaughters because of remote computer use. Works goodA littler salle, but they work.Love these glasses, my daughter was having trouble with her eyes tearing up while using her computer and tablet for school. I took her the the eye doctor and they said her vision was fine. A friend recommended ordering blue light blocking glasses, so I figured giving these a try couldn’t hurt. As soon as she started wearing them, I haven’t seen a tear since. They are light weight and she loves how cute they are the pics on here don’t do them any justice. Great buy, I would recommend buying them to anyone.My son has a few diagnosed disabilities and we bought those for his ADHD. With this whole hybrid school schedule he is very often on computers for school and the lack of routine is making it hard for him to focus. These blue light seem to have made a huge difference. I don’t know if it’s placebo or what but it’s seems to be working for us. They were cheap so we had nothing to lose apart from a few bucks. Definitely will buy again if he loses those.Great value and do a good jobMy daughter like it very goodActually really love these little glasses, they fit my 2 year old and stay on very well, they don’t slide down a lot like other glasses, and they are super adorable many people compliment my when my daughter wears them and ask where I got them. They look better in person than in the pics, the clear pink ones are super pretty ;)Utilissimi per i bambini (la DAD diventava pericolosa) sia per la tv, per il pc che per gli smartphone sui quali i loro occhi sono sempre più concentrati. Consigliati!I had ordered the purple pair for my daughter and we loved them. Then ordered the black pair for my son and they’re a totally different size, they’re too small. Disappointing that the sizing isn’t accurate.