Milk Bottle Heater, Portable Milk Heater Cover USB Baby Bottle Warmer, Baby Bottle Warmer and Baby Milk Heater Heater Bottle Bag for Mineral Water Bottles for Water Cups Breastmilk and Formula(Pink)

I drive 45 min to get my granddaughter...I bring her bottle and as the days we’re getting colder I was worried that it wouldn’t stay warm enough. I’m amazed at how perfect the temp is. It’s a thin lining to slip your bottles or even a travel cup (as long as it’s a thinner one) and it’s easy to use. You’ll be very pleased with it!

Keeps a bottle warm after it’s been warmed up. This doesn’t actually warm up a bottle if you have a cold one.

Does not really warm up bottle.