These foot warmers are specially designed to fit the shape of your boot or shoe. They have a high grip base material so they will not slip or slide around once you have positioned them. They are very flat and just a couple of millimeters thick so, other than the warmth, you do not feel them ander your toes and the ball of your foot.
*1 pair of foot warmers per pack
*Lasts for 5 hours
*Warm within minutes
*Generate heat of 50C - 70C
*Designed to fit the shape of your boot or shoe