Lasts over 7 hours!
Heat Treat Hand Warmers are a non-toxic, environmentally friendly, odorless heat source using all natural ingredients that are non-combustible.
HOW TO USE HAND WARMERS:
Simply open the outer package and expose the packet to air. No shaking is necessary. For best results, use Hand Warmers in an enclosed area with air such as a pocket or glove.
Avg. temp. 135ªF (57ªC), max. temp. 156ªF (69ªC) when used as directed. Each package contains 2 Warmers. All Heat Treat Warmers are designed for one-time, disposable usage.
INGREDIENTS: Iron, water, cellulose, vermiculite, activated carbon and salt.