- There are 4 warmers in this pack.
- Four warmers (up to 18 hours of heat) are individually sealed in an airtight packages to guarantee a shelf life of six years.
- Each packet measures four by five inches and provides up to 18 hours of warmth.
- Air-activated portable packets, no wires or batteries required.
- Odorless, disposable, non-toxic, and nonflammable.
- Environmentally friendly, contains all natural ingredients.
- Activation Time: 15-30 minutes; Average Temperature: 135 degrees Fahrenheit (57 degrees Celsius).
