Stuffing folds instead of fluffing

These have a good cover on them, but I got them to fill out an 18" case, and instead of the stuffing fluffing out with it, it just sort of folded. Maybe that's because they were shrink wrapped? They might have loosened if I stuck them in the dryer, but I don't know. They're good enough as is, if you just don't feel the pillow too closely for the folds.

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