We bought these kids sunglasses about 2 months ago (at REI), when my son was 4 months old. Before that we had about given up going out during the day, as my son would become agitated within a few minutes of going out. Now going out of the house is one of our best times.
I was a bit concerned when buying these, figuring my son would knock the glasses out of place continually. However, after a very short period he acts like the glasses aren’t even there, only complaining when they are askew.
Reviewers on Amazon have complained that the strap is too big for a 4-month old. 4-months is probably near the lower limit on age for these. We needed to adjust the strap to the smallest position and use them with a hat for them to fit. But we also found that they didn’t need to be very tight to stay in place.
I bought this brand because it was carried by REI, who I believe carries quality merchandise. I’m not sure if I would trust the UV protection of the cheapest model that Walmart sources at the lowest price (poor UV protection in sunglasses being worse than no protection at all).
Besides the UV protection and ability to be out in the bright sun, there is also the cool factor, which was really unexpected. Every time we go out walking, I’m amazed at the number of turned heads and comments we get about the shades. The words “cool dude” are used frequently. I’m also now aware of the parents who are out in the bright sun with sunglasses while their infant or toddler is left to squint.