Air activated warmers are lightweight pouches contain a mixture of ingredients that, when exposed to air, create an oxidation process generating heat. Click here to learn more..


Heat Factory is often asked why we don't just make one warmer for both the hands and feet. Unfortunately, it's not that simple. Each product presents its own unique opportunities and challenges. Items designed for the feet must be comfortable, easy to use, work in a restricted air environment.

Handwarmers placed in a shoe or boot with restricted air will likely not generate enough heat to satisfy the user's needs. Heat Factory has developed the Footwarmer to work in a shoe or boot with restricted air. This warmer provides the warmth and convenience to provide all day warmth in most shoes, boots and waders. Everything one needs to provide warmth and comfort.


The Heat Factory Mini Warmer is a Heat Factory innovation that revolutionized the U.S. warmer industry over 20 years ago. The Mini Warmers are our most popular size warmers and last 10 hours. They can be used in gloves, pockets, Heat Factory Headwear, and any place where soothing heat is desired.