This is another wonderful baby product that we've found is working very well. There used to be a lot more variation in quality, but with new level of competition out there, I'm finding that most products are really pretty good if not excellent. This is made of safe materials, so I found nothing wrong with it and nothing to concern me. It is also very easy to use and very easy to keep clean. In this case, we got warmer that is wonderful and earned five stars through a couple of months of testing. It's not my absolute favorite, but I use it for travel and it works very well and is light enough to carry. Of course, I will update this review if we experience any kind of product failure, but so far I'm really happy with this. Good luck in your search.