Amy Warden ... no longer sells the smell-through shrink wrap, so when I run out, I'll have to find another source.
I contacted Amy and she graciously gave me the information I asked about, including the detail needed to find the exact product elsewhere since the company she used to purchase from no longer carries what she used to buy.
There are several vendors online who sell it, but the price I'd have to pay from most of them was formidable (I am a hobbyist, not a large corporation). However, I did find a bargain for a roll of this product on Amazon & snapped it up quick. I'm glad I did because the price went up a lot right after that, so for once, the impulse to buy immediately, rather than leaving it in my cart for days, served me well. It's still a whole lot more than I will probably ever use on my own, but on the plus side, I will never run out and it was a huge bargain.
The product is Syfan's SYTEK polyolefin. It's the 45 gauge that is smell-through apparently, maybe another gauge may be as well, but this is what I used to buy from Amy & I know it worked as advertised & I was satisfied. It comes in different widths & the bargain I got was the 12" width, with a center fold, which will fit my impulse sealer even better than the 16" width I used to get from Amy. It is available in other widths, but this was the best bargain I could find, & I am happy with it. It has a center fold, so the actual width is double were it to be opened up. With the center fold, it's fairly easy to slip the soaps inside the fold & create a seal around the soap, without having to fold anything over.
I ordered a roll of 5830 feet, which is just over a mile of shrink wrap (the least I was able to purchase anywhere else I could find), so it will certainly last me a very long time! And it weighs 24 pounds in total, so no shipping with Amazon, was really great, too.
Sometime in the future I may have to sell off some of it, so it doesn't go to waste, but I'll have to figure that out later. Right now, I'm just glad I won't be scrambling to find a new source when I am out of what I last bought from Amy.
It is not listed as biodegradable, but it does have the #4 recycle code, so at least it can be added to the plastic grocery shopping bag bins for recycling. I wonder if I should start adding that to my labels; I'll give that some thought.