Klein Tools Flame-Resistant Helmet Liner delivers arc flash and flash fire protection in a low-profile design. Soft, stretchy fabric provides all-day comfort while maintaining shape after repeated washing. Its slim fit works easily under hard hats without bunching. Includes visible FR tags for compliance verification. Essential for utility workers and construction crews in cold, exposed environments. Flame-resistant helmet liner with FR rated construction meeting safety standards with visible FR tags for compliance Soft, stretchy comfortable fabric moves flexibly with user for all day wearability Durable construction maintains shape and size after repeated washing for long-term job site use Slim fit low profile design fits easily under hard hats and helmets without bunching or slipping
