Very good and warm for a long time
Unfortunately not as warming as described
They keep the warmth for a long time, they are even requested as souvenirs abroad...!
I would buy again and again
Very practical for your jacket pocket. lasts a long time, doesn't get too hot
Proven function
hot hot hot..super in winter
Warm fingers in an emergency!
Top for cold days
Heats very well but not very environmentally friendly