Includes 4 Full Size Aqua Stone Humidifiers. Each Aqua Stone measure approximately 5" x 5" x 5"</br>Breathe easy with this decorative, natural stone humidifier. The Aqua Stone radiates water to keep air moist wherever you are.</br>Moistens air without dangerous hot water or heating elements</br>Aqua stone humidifies silently and naturally without a motor. Easy to use, just add water to the base</br>Even though the picture on the box looks brownish the base is actually black</br></br>Product Description</br></br>The Aqua Stone's unique, porous clay sphere naturally absorbs and evaporates water to keep air moist. No cords, cleaning, or noise - the Aqua Stone humidifies any room simply by adding water into the air the natural way!</br><br/>http://www.amazon.com/gp/product/B01HOQC2HG