Does anyone know a source from which to obtain heavy duty vinyl/PVC pouches? I'm thinking of something along the lines of the pouch that the Adventure Medical Kits PSP is packaged in. Although preferably in a variety of sizes. I'm not having much luck with Google, and perhaps I am not looking for the right material or not using the correct name/title.

Thanks!
_________________________
“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman