Cheap, but air gets trapped inside.

These bags are cheap. I purchased these because of the "Amazon's Choice," but turns out that air is still inside. I was trying to use these for Sous Vide. I've tried many times with different meats, always some air left. One of my first meals was ruined, I'm more attentive to the process now. Still, it's a disappointment compared to the food saver roll.

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