Pyramex V2G Safety Glasses with Adjustable Strap Vented lenses and airflow to INCREASE AIRFLOW; lenses treated to PREVENT FOGGING and self seal small scratches Headband and temples feature RATCHET ADJUSTMENT FOR PERFECT FIT Flame resistant FOAM PADDING forms a perfect seal to KEEP OUT DUST AND AIRBORNE PARTICLES Lenses provide 99% protection against harmful UV rays Interchangeable temples and headband INCLUDED WITH EACH PAIR OF V2G