Grabber Hand Warmer - A pair of chemical heat bags for your gloves. The warmth is developed in a matter of minutes, and keeps going for 6+ hours, with a temperature of 55 - 69°C. One unit contains two bags, that is one for each glove. Size: approx 10 x 6 cm. Please read and follow instructions on package. - The package contains two disposable, single use warmers - When you open the bag, the warmers start automatically as they can react with oxygen: therefore, do not open the bag until you want to use them