The Portwest challenger goggles have indirect vents that stop any liquid or dust particles from entering it. It has an anti-mist coating to ensure that it does not mist up even when worn with a dust mask or prescription eye wear. This product has an elastic back strap for enhanced comfort.conforms to EN166 1 B 3.
Goggles are supplied in a universal size that should suit most users, including those who wear prescription glasses.