Nuby Natural Touch Electric Bottle Warmer ensures that your baby's food is always at the perfect temperature whether warmed from frozen, refrigerated or room temperature. With Hassle-free One-Touch operation. Easy as 1-2-3. Add water, load the warmer and touch to start!. It warms breast milk, formula and baby food evenly and safely. The one-touch Warmer fits all sizes, shapes and brands of baby feeding bottles.