These all natural warmers are simple, effective and long-lasting. Simply open the package and these oxygen-activated warming packs start working right away to provide comfortable warmth throughout the workday. Since they're oxygen activated, you can reseal them in a plastic bag for later use if the full 8 hours of energy hasn't been expelled. Ideal for use with Ergodyne N-Ferno headwear with internal warming pockets. Save 24% when you buy 40!
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