Use while skiing, snowboarding, bicycling, horseback riding, fishing, hunting and many other outdoor activities.
• Use hand warmers in an enclosed area with air such as a pocket or glove. • Instant heat that last up to 10 hours. • Just open package and expose to air. • No kneading or shaking necessary. • Average temperature 57°C – 70°C • Clean, safe odorless, dry & non-toxic heat source. • Made in the USA