When your infant is hungry, you want to be able to satisfy her quickly. Most pediatricians recommend warming a bottle of formula or breastmilk since feeding a cold bottle can create gas pains. But warming up a bottle in the microwave isn't advised either (it can break down some of the nutrients) and running it under hot water can take a good five minutes. The Express Cordless Bottle Warmer from Umix can take the edge off a cold bottle in a couple of minutes. Powered by ThermaCell technology, the unit requires no batteries or electric cords. It's small enough to fit in a diaper bag, so you can warm bottles wherever your travels take you and your little one.