The RAW Hydrostone made from uncoated natural terracotta clay, the humidifying stone is kiln baked.

It was originally developed to keep tobacco fresh on ships during the early days of modern trade.

For best use:
1. Let the stone to soak in water for 5 minutes
2. Place it in a small plastic bag with your Boveda 62% or Integra 62%
3. Place the open pack with your tobacco or herbs in your airtight container
*Works great with the 420 Science Wide Mouth Jars due to the width of the jar)

It can even bring old dried material back to life and is 100% reusable

1 stone per box