I was gifted the original Meke Baby warmer, I honestly couldn't live without it!!! We took it EVERYWHERE and it was by far the most used baby product, by partner and mother in law were obsessed. As bubs transitioned to formula I got the twist bottles and the new express warmer and Its honestly life saving.. I found with the original as he was getting older and the servings were getting bigger I was needing to charge it more frequently, so with the express I just leave it on and it will last all day/night. I pre-make all the formula serves in the twists and I am set. Honestly, makes life so much easier!!!