N-Ferno Instant Hand Warmers – Long-Lasting Warmth, Anytime, Anywhere

The N-Ferno Instant Hot Pack Hand Warmers by Ergodyne are air-activated heat packs that provide up to 12 hours of consistent warmth, ideal for cold weather work, outdoor activities, or emergency preparedness. Designed for one-size-fits-most hand use, these disposable warmers feature all-natural ingredients that safely generate heat when exposed to air—no squeezing, shaking, or boiling required.

Perfect for outdoor workers, sports spectators, first responders, or inclusion in survival kits, each pair of hand warmers is easy to activate and resealable for reuse the next day.

🔥 Key Features:

• Air-Activated Heat: Just open the pack—no external activation needed

• Natural, Safe Ingredients: Heats with iron powder, salt, activated carbon, vermiculite, and water

• Long-Lasting Warmth: Delivers up to 12 hours of consistent heat

• Reusable Until Depleted: Seal in a zip-lock bag to slow oxygen exposure and reuse next day

• Compact and Portable: Designed for hand warmth on-the-go, no bulky batteries or wires

• Disposable Convenience: Great for single-use needs in cold environments

• One Size Fits Most

📊 Specifications