КАТАЛИТИЧЕСКИЕ ГРЕЛКИ – теплый очаг в кармане. КАК они УСТРОЕНЫ, зачем нужны и КАК ими ПОЛЬЗОВАТЬСЯ

To warm your hands in winter, it is very convenient to use catalytic pocket warmers. Such heaters are light, compact and work for 10-12 hours. They are even smaller than a pack of cigarettes! How are such heaters arranged, why are they needed and how to use them? You will learn about this and much more in this short video. Look! It will be interesting! https://vk.com/public167242222   / 2062442170636939