Based on my experience, these reusable glasses have been a game changer for my safety on the job .The plastic is sturdy yet comfortable to wear for extended periods of time. They provide clear visibility and keep my eyes protected from debris. I appreciate the eco-friendly aspect of being reusable. However they do tend to fog up after a while, which can be a bit distracting. Overall, I highly recommend these glasses for anyone in need of industrial and scientific personal protective equipment..