High expectations were not met when trying to use this item. For a small thin queen-size mattress, it worked well, although it leaked immediately afterward, although the sealing was done carefully. For a thicker queen-size mattress, he couldn't resist. Since the ad said it could fit a king size mattress, I don't know how that would work. In short, the concept is great, but the bag needs to be much bigger and have a better seal.
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