BIRCEN Photochromic Cycling Glasses: Mountain Bike Sports Sunglasses for Men Women Running Riding MTB Baseball

While this is advertised as cycling glasses, I got this to wear during my running sessions because it's so lightweight and comfortable. I also love that it completely covers my eyes and has a wrap-around effect so I'm not bothered by sun lights in any direction. What I love about this glasses is that it can change from clear color to dark gray shade color when exposed in sun light for protecting your eyes and providing better vision. It provides clear vision when there's no sun and automatically becomes a sunglasses when sun light is present. It's so comfortable and helps with my vision so much that I now have to wear these when driving during the day. I hope they make a night vision glasses with this exact frame and glasses so I can wear them at night when driving. Highly recommend it!

Very comfortable and they block the sun rays

EXCELENT product

There Ok !

These are decent for the price

These far exceeded expectations. I have photophobia (my eyes hurt in bright light). These seem to adjust perfectly to the ambient light (outdoors) and the ventilation means they don't steam up. I use these mainly for cycling, and I feel my eyes are protected well, and at the same time, I have really good peripheral vision. The best part is that if something were to happen to these, I'm not going to cry about it; I'll just order another pair.

They take about 15 minutes to achieve the slightest tint when left in direct sunlight. Not sure how they could be more useless than that

Lightweight and comfortable. The glasses turned dark when walking outside on a sunny day.