Lasts two weeks, maybe

I've already had to replace two due to the suction going and not working. These are a different kind of duckbill valve than I ordered last time, and I should have gone with my original company again. These are awful. The other brand lasted months, without issue at all and I only replaced them due to discoloration and once or twice due to suction lessening. I should have returned them after the first one went three weeks in, but didn't and I regret it. I'm just hoping they get me through the next two months until my pumping journey is done.

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