I had expected to be able to wear these HotSox as slippers, but you have to keep as quiet as possible, so that the filling does not completely slips forward or back feet. There are at the top and bottom only one chamber in which there are the flaxseed. The chambers should have been stitched to ensure an even distribution of flaxseed. This fact also makes it very difficult to get into the Sox, there when it tends to fill generated quite a bottleneck, and you have to squeeze into it somehow. I have size 40, maybe it's easier for people with smaller feet, but the size is nunmal recorded for 36-40. In addition, the HotSox smell from the start pretty disgusting because it airtight in plastic packed arrive and the moisture that is in the linseed, fault to himself. Do they wash in the operating instructions may not - neither the machine nor hand. The heat output is also not 90 minutes and at least the Sox feel no longer particularly hot after 30 minutes. However, since the distribution of flaxseed normally is so irregular, the feet are cold but anyway already in many places. Although I have not tried any similar products, but the 10 it is better to invest in something Most significant. Saves you this disappointment.