Foot WarmersMore Heat, Less Waste. Ignik Foot Warmers are Arctic Grade, designed to solve the biggest problems you face with cheaper air activated warmers; providing reliable, consistent, and long lasting heat when you need it and with less waste. We start with the highest quality, naturally active ingredients. The contents are safe, all natural, and biodegradable. Our AirBarrier pouch keeps more air out for more reliable heat up to 8 hours each, more heat than