Gentle water bath safely and quickly warms breast milk to body temperature, with even and consistent warming that follows CDC and USDA guidelines to best preserve nutrients in breast milk12 pre-programmed settings to choose from, you can customize the warming cycle to start from frozen, refrigerated, or room temperature. Convenient auto shut-off and timer features prevent overheatingWarm breast milk storage bags, any size baby bottle, and baby jars and baby food pouches. To warm Dr. Brown’s Bottles, just remove the internal vent system and screw on the included travel capPackage contains one MilkSPA breast milk and bottle warmer, one narrow travel cap, and one wide-neck travel cap