Looking for heavy (3-4 mil) 55 gal drum liners (in a reasonable purchase quantity - 1/2 dozen or so), preferrably bright color (orange?) to use as survival wrap. Does anyone know where to get these?

Closest I've found is http://www.bepreparedtosurvive.com/ShelterProducts.htm , scroll 3/4 down page to their "Orange Survival Bag". This item will work, but I was looking for something a little shorter to save a bit of weight (I could cut this one down to size however). Any other purchase sources that people have found?

Thanks!