RAW Hydrostone is the perfect solution to keep your stash fresh! RAW has taken uncoated natural terracotta clay and kiln-baked it into 1.5 inch diameter stones. Simply soak each hydrostone in water for five minutes and its natural properties will absorb the moisture, creating a humidity barrier that preserves your herbs' freshness longer. Each box contains 20 packs of RAW Hydrostones so you can get maximum protection for your favorite herbs! Get RAW Hydrostone today to keep your stash fresh and ready to enjoy!