Hothands Hand Warmers are rectangular shaped single-use air-activated heat packs that provide up to 10 hours of continuous warmth for the hands. When to use it? Outdoor sports Working in the yard Jogging or taking the pet for a walk Shopping or commuting to work Tailgating at events Product Features: Up to 10 hours of long lasting heat! Ready to Use Air-Activated Safe, Natural Heat Contains one pair per package Product Name: Hot Hands Hand Warmers - Pack of 2 Hot Hands Code: HH001