Have the soles already placed in all sorts of shoes, boots, loafers, even ballerinas. Can I therefore the opinions that they stick firmly to the shoe do not connect. They do not slip around in the shoe and you can normally take out again. Warm really good and comes from below by no refrigeration. It gets a little more closely in the shoe, but I've found even in my Ballerinas enough space for my feet. Absolute tip for those who suffer from cold feet.