NSA Heavy Duty PBI High Heat GloveNSA Heavy Duty PBI High Heat Glove When the job demands maximum durability alongside extreme heat protection, the NSA Heavy Duty PBI High Heat Glove delivers. Combining the unmatched thermal stability of PBI (Polybenzimidazole) fiber with a heavy duty construction, this glove is built for the toughest high heat industrial environments where both heat and mechanical hazards are present. Key Features Heavy Duty PBI Fiber Construction Thicker, reinforced