Pyramex V2G Readers Safety Glasses with Adjustable Strap and Magnifying Reader's Lens Flame resistant foam padding forms perfect seal to keep out dust and airborne particles Lenses and frame vented to increase air flow Headband and temples feature ratchet adjustment for perfect fit, features quick fit retainer Interchangable temples and headband included with each pair Lens insert is strategically placed out of user's direct line of vision