On the recommendation of another mother, I decided to purchase the Cool Twister Nip because our son knows no fun when he's hungry. After the Cool Twister was ready, it was really fast and the Sohnemann could peacefully sucking on his bottle and I did not have to even wait forever, until the temperature had reached to touch the bottle. Very soothing to the nerves! The Cool Twister is easy to handle and to clean and really a recommendation, especially for the time in which the milk meals are the main meals. Because of some high purchase price for the rather simple invention interfere (as would one also can get it ;-)) only marginally.