Is tight, keep its promise and the pattern looks great. They isolated so well that she even gives a little residual heat even after 7 hours. Perfect night to warm the feet. Only with the dispatch I had problems (Hermes-Versand). The package was handed over to the neighbor and dropped no note with me and we neighbors (10 dwelling) do not know us all personally. I had to call and then afterwards luckily the service lady could find out where my hot water bottle is the Amazon customer service (real help in almost everything).