Each product, depending on number of heat zones, can have different ranges.
3 Zone Jackets: Low - up to 10 hours, Med - up to 7 hours, high - up to 5 hours.
5 Zone Jackets:Low - up to 9 hours, Med - up to 6 hours, high - up to 4 hours.
Gloves: Low - up to 6 hours, Med - up to 3 hours, High - up to 2 hours.
Socks: Low - up to 12 hours, Med - up to 6 hours, High - up to 4 hours.
Beanies:Low - up to 7.5 hours, Med - up to 5.5 hours, High - up to 3.5 hours.
Base Layer Pants:Low - up to 10 hours, Med - up to 7 hours, high - up to 5 hours.
Blankets and Hammocks: Low - up to 9 hours, Med - up to 5.5 hours, High - up to 3.5 hours
Camping and Stadium Chairs: Low - up to 9 hours, Med - up to 6 hours, High - up to 4.5 hours