REUSABLE HEART-SHAPED HAND AND BODY WARMER >Perfect reusable hand warmer and more Just bend the plate in half and the crystallization process will begin immediately, thanks to which the heart will begin to emit heat (approximately 50-60 degrees). The heater is safe - it does not contain any harmful chemicals - it is a safe salt crystallization process Slowly, within an hour, the heart will cool down (time depends on the surroundings) temperature; kneading the heater prolongs its operation). When the heart turns whitish and cools down, just put it in hot water and boil it for a few minutes (about 5-10 minutes; 39; you don't have to worry about boiling it, nothing bad will happen to the heater - it is designed for this) and then let it cool. Let it cool completely - and you can enjoy the heater again - now just bend the tile again (preferably in a different place - in the place where small cuts with a bulge are visible) Perfect for cold weather, for snowboarders, fishermen, hunters, divers and for cold evenings. Irreplaceable help for anglers, snowboarders, skiers, children and the elderly. Also ideal for motorcyclists, riders, and for winter walks and outdoor games It can warm not only your hands - just put them in your shoes or under your clothes - in the coldest place Ideal for cold people and people with poor circulation who complain of cold hands and feet Instruction: 1. Bend the metal plate in the center of the heart 2. In a few seconds, the inside will crystallize and reach about 50-60 degrees 3. After cooling, boil the heart in hot water for about 5- 10 minutes so that it takes the shape of a gel again and let it cool so that you can use the heater again (bend the plate again)