Hyper Tough clear safety glasses fit over most prescription eyewear. High-velocity impact resistant shatterproof and lightweight comfort style. The safety glasses are designed to be extremely lightweight you won t feel any oppression even if you wear them continuously for one day. Besides the porous vents of the temples increase the internal airflow and keep the eyes around dry for a more comfortable fit. Brow guard provides additional protection from falling objects These safety glasses are designed to protect your vision for both indoor and outdoor use.