I work outside every day. Obviously these are not "safety glasses” but I have wore them every day for a whole season and with average care they have not scratched or bent, or loosened in any way. I bought them for a cheap pair of backup sunglasses, but they are so comfortable I wear them any time I’m outside wheather it’s for work or home life. I have much more expensive sunglasses that I rarely wear now unless I forget these ones at the house.