I replaced it with this mattress topper I bought when I bought a mattress. The old cover never seemed to fit properly and always ended up being so wrinkled that it was uncomfortable. This waterproof mattress topper from Spahr is perfect for my crease-free king-size bed. I haven't spilled any water or liquids on it so I can't comment on how waterproof it is but I can give it 5 stars for fit, comfort and durability.
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