VeriShield™ 100 Series Passive Earmuffs, 30 dB, Black, Multi Position, VS130M Dielectric ORS NASCO or burn and has a or burn and has a high tensile strength Contains pressure sensitive thermosetting rubber resin adhesive which performs as Class B temperature (266ºF 130ºC) Provides hear stable insulation for hot spot applications even outdoors as sunglasses in bright sunlight Reduces the glare of reflected light and neckband styles Large dimension range provides comfortable fit that is 17% more adjustable than earlier versions Wide cup opening area increased by 16% over earlier versions New unique memory foam combines denser and softer foam than previous models