A bottle warmer is a device designed to heat baby bottles and food jars quickly and safely. It typically uses steam or warm water to gently warm the contents, ensuring that they reach a comfortable temperature for feeding. Many models are compatible with various bottle sizes and materials, making them versatile for parents. Using a bottle warmer can save time and reduce the risk of overheating, which can happen with microwave heating. Some bottle warmers also come with features like timers and automatic shut-off for added convenience and safety, making them a popular choice for new parents.