Having issues with your tobacco drying out? Try out our newest Humidification system, Hydro-stone. This small, yet very effective ceramic stone, has been developed and tested vigorously in accordance with one of the leading rolling tobacco factories in Europe. This product is made from baked Terracotta clay and is 100% natural and additive-free and will last a lifetime when used as directed. Product is ideal for use to rehydrate or keep fresh 50 to 100 grams of tobacco (2 to 3.5 oz.). Simply soak the stone for 2-3 minutes, as per the instructions provided, then place in a sealed container with your tobacco, and within 15 minutes you should notice your tobacco's moisture content refreshed.