Lens Safely oculars.
Polycarbonate lens 25 mm
Strap: Elastic (fire retardant)
Designed to meet the performance specifications of NFPA 1977. ANSI-Z87.1
Weight 155.92 grams or 5 1/2 ounces
Passes the 350 Heat exposure test
Wildland fire fighting operations and other emergency operations where there is a threat of fire