Do they expire or go bad?

There is no expiration date on the heaters. We have used heaters that were 15 years old and they worked great! As long as the heating element is kept dry, it should work even in 10-15 years.

Are the bags you sell dated so that they are sure to work? I have used old bags and sometimes they do not heat up at all.

Hi, Thank you for your inquiry. The bags are not dated but they are a "current edition" so they work very well. I hope it helps. Best regards, MREdepot team

What are the bag dimensions? Need to fit a 16 oz mason jar inside (3.2x 3.2x5.2). The goal is to make a cup coffee.

Hi and thank you for the question! The dimensions are 0.25" x 12" x 5.75". If you want to make a cup of coffee using these heaters, you should use them with a MRE Beverage Bags that would go inside of a heater and protect your beverage from the heating elements.

Some commercial packs are up to 80grams in size. How many grams is the heating element for these bags?

Hi and thank you for the question! There are several sellers selling this product, so we cannot vouch for everyone. However, we at MREdepot, sell the original FRH heaters, not commercial ones. The heating element weighs 22 g. These are the same green heaters that come in an MRE meal (NSN 8970-01-321-9153). So if you purchase from MREdepot seller, you will be getting the 22 g heating element. Sincerely, MREdepot Team.

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🔥 Stay warm like a pro, wherever adventure calls!

PACK LIGHT STAY WARM - Compact and featherweight design fits seamlessly into your gear
PROUDLY MADE IN THE USA - Quality craftsmanship you can trust, supporting local manufacturing
ECO CONSCIOUS CONVENIENCE - Non-toxic and biodegradable—dispose with regular trash, no guilt
EFFORTLESS HEAT ON DEMAND - Simple activation for instant warmth anytime, anywhere
MILITARY GRADE RELIABILITY - Authentic, real current edition FRH heaters trusted by the pros

This 12-pack of Military Surplus FRH heaters delivers instant, reliable heat with a lightweight, compact design. Made from magnesium, iron, and sodium chloride, these non-toxic, biodegradable heaters are easy to use and dispose of responsibly. Crafted in the USA, they offer authentic military-grade performance for outdoor enthusiasts and professionals alike.

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