FREE SHIPPING ACROSS NORTH AMERICA ON ORDERS OVER $100 CAD*
Each package contains two warmers and duration is for over 7 hours. Ave temp 135 F (57 C), max temp 156 F (69 C) when used as directed. Minimum order 1x box. Each box contains 40 packages. Don't go for the cheap substitutes which are known to split and not last as long as promised.