Free shipping and returns available. Comes with sleep mode, perfect for light sleepers, kids in bedroom. With wisper quiet operation, its silent mist creates you a pleasant and comfortable sleep quality without disturbing light. This cool mist humidifier features with 5L water tank and 3 mist output adjustable control by one touch, free yourself from constant refill. Equipped with dual air filtration system, use activated carbon purification net make it easy to create the fresh air in your home.