This item looks like an empty halfgallon waterskin with an airtight seal. When it is opened and exposed to air, an alchemical substance within the flask slowly condenses drinkable water out of the air. The flask produces water at a rate of 8 ounces per hour (becoming completely full after 8 hours). The water can be poured out as it appears or simply kept in the container. The flask is completely reusable.