In order for blankets to serve for many years, warming them on cool nights, you need to properly care for them. Large and bulky items can be washed in machines with a large load weight and have special programs for special washing. But it all depends on two factors: the material of the product and your washing machine. I advise you to read which washing machines are better here and still buy a more convenient one in order not to wash such large things yourself. I myself once washed a blanket, and it is very hard work for a man and even more so for a girl.