Looks like the size of bag I put my chicken breasts in before I freeze them haha.
Fair enough personally I would hate that type of bag let me know how it goes but personally with ziplocks I always loss some in the actually dame zippy bit when am using one to mix up my filler with oral raws. And shouldn’t be to bad since yours isn’t melted but if it melts and in that size of bag I can see you lossing some raws like or having to sit and try scrap all over the bag. I now don’t even use ziplocks to shake up my filler and oral raws for that reason. Let me Know how it goes . And agree with the label the second that is placed in there that should be labelled so both you and the supplier can’t get it mixed up.