I'm going to contact the company but figured I would probably get a quicker response here. Does anyone know if these cello bags heat seal? Also, has anyone ever used these? http://www.nashvillewraps.com/cellophane-bags/biodegradable-bags/c-052054.html I'm going to start shrink wrapping a lot of my products because my labels just get so damaged from being hauled around from market to market. I see at the top it says "Heat sealable with high oxygen barrier properties" Does this mean that they are in fact shrink wrappable? Many thanks in advance.