This simple device is what you need to keep a few cigars and loose tobacco fresh for 45-60 days. Just dip in distilled water for 15 seconds to activate and place the hydrated cell into its reclosable bag, then place into your travel humidor or cigar bag. This product is non-toxic and disposable. One water pillow is recommended for 5-10 cigars. This product is inexpensive and easy to use. Great for mailing cigars and as a travel humidifier!