UniHeat™ Heat Packs Feature:
- Disposable 4" x 5" heat packs will produce temperatures between 105 - 135 degrees Fahrenheit.
- 40 hour pack will produce heat for 40 to 45 hours.
- Shelf life of 3 years.
- Weight: 83 grams / 3 ounces each
- Simple Operation - "turns on" when removed from the plastic outer packaging and exposed to air.
- Contains all-natural high grade iron powder undergoes rapid rusting producing heat as a safe by-product.
- Non-toxic, non-flammable and Biodegradable - safest heat pack on the market.
- Detailed instructions for use are printed on the back of every heat pack.
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