CAUTION!!!!Ok I say this strongly and it may not happen to you but my mom bought me toe warmers there the same as your talking for the hands but you put them on the bottom of you sock. Anyhow my feet go numb like even in a cold doc office I feel like blocks of ice. The other day they were and the power went out so I put them on. Well they get super hot and my feet were numb so I couldn't feel it till it was too late. I'm very sensitive and my feet felt burnt. So just be careful of that.