I was not familiar with the stuff either until I got my Overlander. Pretty neat stuff - It is thin, and somehow formulated to wick into seams. You can order it airstreamdreams.com. If this list accepts links, here is one : http://www.airstreamdreams.com/item.jhtml;$sessionid$ASV430YAAAKXXTZENUGETIWPERWRJPX0?UCIDs=69540%7C1044918&PRID=1443431 Tom