This is normal. They make cool stuff closed but leaky, the plastic flexes if the bag or the closure area is too big, and that's almost always because even a standard sized bag of chips has to be folded to fit the largest huh increases the thickness of what you cut. It will still clamp, but again not tight and the clamp will flex. Also, there are too many tiny clips in the package which are not practical at all. I just wish it was bigger. I do not recommend. Just get regular clamps, less hassle, easier to use, and your family won't be staring at the newfangled concept (which then won't work).
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