A bottle warmer is a device designed to heat baby bottles quickly and safely. It uses steam or warm water to gently warm milk or formula to a comfortable temperature for feeding. Many bottle warmers are compatible with various bottle sizes and types, making them convenient for parents. These devices often come with features like timers and automatic shut-off functions to prevent overheating. Some bottle warmers can also be used for warming baby food jars. They are popular among new parents for their efficiency and ease of use, helping to ensure that feeding time is smooth and stress-free.