Most of the wearable sleeping bags on this list are machine washable. But just because some can be washed in the machine doesn't mean they should be washed in the machine after every use. In general, even if you use the bag regularly, you shouldn't wash it more than once a year. If you do, your insulation will lose loft and be rendered fairly useless. If you are not sold on the idea of washing your wearable bag yourself, there are a number of bag cleaning services available that will clean your bag for you. Check with the manufacturer before cleaning any wearable sleeping bag.