I gave this Fußwärmer my wife for Christmas and he is doing what he should - he warms the feet. Unfortunately, this takes time because the sewn-in heating elements are not thermally insulated towards the outside, that is, the foot warmer has the same temperature as the outside to the inside (bad Wikungsgrad) and is therefore operated by my wife only on the highest temperature setting stage. At the bottom of an approximately 2 cm thick foam pad is inserted which successfully prevents warming of the foot sole. Only when this is removed, it gets on the sole of the foot comfortably warm. The lining fabric feels very valuable to soft with pleasant skin feel and can be taken for washing. A circumferential mounting option on foot warmer would for an easier "on / off" yet been ideal. In short: a place for device for temperature cold women's feet