Have the Kirschkernkissen put in the microwave to warm up (lt. Absolutely released manual). After not only 30 sec. The Kirschkernkissen began to smoke and almost burning. The pad was immediately quenched with water and thrown out! The microwave stinks now bestial and this I can now probably throw away because the smell is no longer rauszubringen. I had previously been different (and cheaper) Kirschkernkissen in the same microwave oven for a long time in it - without any such thing happened.