These Bluestone Room Humidifiers feature a porous ball that absorbs and releases moisture into the air via the simple science of evaporation. Simply fill the black ceramic bowls with water and let the natural clay stones do the rest; no electricity, batteries or expensive filters are required. Includes two humidifiers; the small one is perfect on your bedside table or next to your reading chair while the large humidifier adds moisture to larger rooms.

Fight Dryness No Noise and No Electricity, Batteries or Expensive Filters Required Fill Black Ceramic Bowls with Water Natural Clay Stones Absorb and Release Moisture into the Air via Evaporation Includes: Small Humidifier (3.5 inch circumference, 3.25 inches tall) Large Humidifier (4.5 inch circumference, 4 inches tall)