The Medisana foot warmer is made of flexible, soft and cuddly material in which the heating fibers are sewn. The foot gets so the heat from the heel, on the sole over the instep to. Because the "device" is not stiff, so it can be taken even to bed or on the couch, exclusive use in a seated position is not necessary. The snug lining is removable and washable at 30 degrees. Unfortunately verfummelt liked to poke at the feet. Here were created for attachment to the edge remedy three or four push buttons. On the bottom is an approximately 4-5 cm thick foam which is soft for the feet, but for the fast heat delayed (I have him therefore removed). The control panel has 3 heat settings. If should be heated quickly, it is preferable to begin with the third stage. Later you can heruntergeschalten at level two. The first stage I do not feel as warm enough to thaw verfrorene feet. Overall, it takes quite long, until it is finally really warm (hence only 4 stars). It may be safely asleep during use but as an automatic thermal protection and automatic shutdown is installed after 90 minutes. All in all, a nice alternative to the hot water bottle that can only warm side so, while the electric foot warmer Medisana from above and below heated. Thus, the device for cold feet is quasi recommended "strongly".