•reat body soreness with this Electrothermal Heat Pack. It heats up in 10 minutes and stays hot for 2 hours and more. • Measures L 27.5 x W 3.5 x H 19 cm • Heats up in 10-15 minutes • Automatic shut-off feature when 75-80-degrees is reached • Stays warm for 2-4 hours • Soft velvety polyester Cordless: heat, unplug and useAutomatic temperature control to avoid over heatingHeat lasts for up to 2-8 hoursCharge time: 5 to 10 minutesCan safely be used on stomach, back, shoulders, neck, legsWarm hands and feet, often can promote blood circulationWarm waist can ease back pain, backache and other issuesGirls menstrual warm belly can relieve menstrual pain