What follows is a copy and paste from a site that sells them ... drop me a note and I'll tell you where to find them ... very favorable pricing, too ... my e-mail addy if you copy/paste all of the below addy, substitute for (at) and (dot) is:
fromsteves(at)hotmail(dot)com
--------------------------------------------------------------
Climmax Premier Media is the same tried, tested, and proven technology that is used by museums to protect priceless works of art and one of a kind manuscripts. If it is good enough to protect multi-million dollar works of art, it will protect your cigar investment better than any other humidification medium on the market today. Newly formulated to maintain a 65% environment for those cigars best stored at a lower RH. The Climmax Premier Media are sold in 1/4, 1/2, and 1 pound increments and will provide precise humidification control for approximately 5 cubic feet per pound. The media should be stored in a water-tight, open top container and placed inside your humidor. The media are manufactured to maintain 65% humidity with a variance of +/- 2% RH. All you need to add is distilled water.